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Sample records for indian river hydroelectric

  1. Indian areas threatened by hydroelectric projects in Brazil

    Energy Technology Data Exchange (ETDEWEB)

    Aspelin, P L; Santos, S.C. dos

    1981-10-01

    In Brazil, as elsewhere, high priority is being given to developing domestic energy sources due to the spectacular increase in the cost of imported petroleum in recent years. This paper discusses the present situation of the thirty-two to thirty-four various Indian areas presently known to be threatened by seven major hydro-electric projects and one flood-control project, either planned or underway, in or directly involving Brazil. A total of at least 100,000 hectares of Indian land (or nearly one hectare for each remaining Brazilian Indian) will be flooded or otherwise expropriated by these projects. Past efforts by the Brazilian National Indian Foundation (FUNAI) to protect the Indians from the pressure of ''national development'' have not been sufficient. Research, planning, publicity, and political pressure are necessary to ensure that their efforts regarding these hydroelectric projects are more successful.

  2. Hydroelectric power utilization of the River Crna Reka

    International Nuclear Information System (INIS)

    Ivanova-Davidovikj, Jasna

    2001-01-01

    In the paper several feasibility studies for rational use of the Macedonian River Crna Reka, developed by foreign companies are analysed. The utilization of the hydro-power potential of the River Crna Reka is predicted to be by realization of two hydroelectric power plants with total capacity of 450 MW, as well as annual electric power generation of 600 GWh. This two HPPs will facilitate the development of the Macedonian electric power system

  3. Hydraulic potential evaluation for micro - scale hydroelectric generation at Chicamocha River Basin - micro - scale hydroelectric plants

    International Nuclear Information System (INIS)

    Pacheco P, C.M.; Parga C, G.M.

    1995-01-01

    In development of technical and scientific cooperation treaty carried out between INEA (today Ingeominas) and Catholic University of Colombia, was elaborated the program: Potential Evaluation Hydraulic for Small hydroelectric plants; whose purpose is to carry electrical energy service to smaller populations and rural zones to all municipalities of country. To begin the program was selected the corresponding area to Chicamocha River Basin, the one which corresponds to 72 Municipalities of Boyaca and Santander Departments, due to the fact that is had good information area originating from diagnostic elaborated by INDERENA with the objective of formulating the Classification Plan and the Basin Managing. This Thesis consists of: 1. To identify all micro-basins; 2. To analyze energy demand on part of kernels of population seated in the study area; 3. To evaluate energy generating capacity of water currents and 4. As of the obtained results, to propose alternative for small hydroelectric plants design (PCH) according to defined needs

  4. [Impacts of hydroelectric cascade exploitation on river ecosystem and landscape: a review].

    Science.gov (United States)

    Yang, Kun; Deng, Xi; Li, Xue-Ling; Wen, Ping

    2011-05-01

    Hydroelectric cascade exploitation, one of the major ways for exploiting water resources and developing hydropower, not only satisfies the needs of various national economic sectors, but also promotes the socio-economic sustainable development of river basin. unavoidable anthropogenic impacts on the entire basin ecosystem. Based on the process of hydroelectric cascade exploitation and the ecological characteristics of river basins, this paper reviewed the major impacts of hydroelectric cascade exploitation on dam-area ecosystems, river reservoirs micro-climate, riparian ecosystems, river aquatic ecosystems, wetlands, and river landscapes. Some prospects for future research were offered, e.g., strengthening the research of chain reactions and cumulative effects of ecological factors affected by hydroelectric cascade exploitation, intensifying the study of positive and negative ecological effects under the dam networks and their joint operations, and improving the research of successional development and stability of basin ecosystems at different temporal and spatial scales.

  5. Ecological impact from large constructions of hydroelectric power plants in Parana River, Brazil

    International Nuclear Information System (INIS)

    Bonetto, Argentino A.

    1992-01-01

    An analysis over environmental impacts on Parana River as a result of the hydroelectric power plants construction is presented. Hydroelectric dams, also including the planned ones, are showing during the explanation, and biologic aspects are discussed. 30 refs., 4 figs., 2 tabs

  6. Feasibility study for Boardman River hydroelectric power. Final report

    Energy Technology Data Exchange (ETDEWEB)

    None

    1979-02-22

    The feasibility of generating additional hydroelectric power from five consecutive existing dams located on the Boardman River in Grand Traverse County and Traverse City, Michigan, was investigated. The potential hydropower production capabilities, in terms of base load power and peak load power, the legal-institutional-environmental constraints, and the economic feasibility, including capital investment, operating costs and maintenance costs, were evaluated for each of the five dam sites individually and as a series of co-dependent facilities. The impact of installing fish passages at each site was analyzed separately. The feasibility assessment utilized the present worth analytical method, considering revenue based on thirty mills/kWh for power, 0.4% general economy escalation rate, and a 6% net income to the municipal utility. The sensitivity of fuel costs increasing at a different rate than the general price-escalation was tested by allowing the increase in fuel costs to vary from 3 to 8% per year. Assuming fuel costs increase at the same rate as the general economy, it is feasible to update, retrofit, renovate, and install hydroelectric generating capacity at Sabin, Boardman and Brown Bridge. Rehabilitation of Union Street and Keystone is also feasible but somewhat less attractive. Operating the dams as a co-dependent system has environmental advantages and can provide additional revenue through peak load power rates. A development plan to implement the above is outlined utilizing an ownership arrangement whereby Grand Traverse County provides easements for Sabin and Boardman Dams. The plan calls for operation of the system by Traverse City.

  7. Hydro-electric power project on the Toulnustouc River

    International Nuclear Information System (INIS)

    Rochon, Y.; Morneau, J.; Lefebvre, G.

    2001-01-01

    Hydro-Quebec has proposed the development of a hydro-electric power project on the Toulnustouc River, located between Saint-Anne Lake and Manic Reservoir. The work would involve the construction of a power generation plant of 526 MW, construction of a 77 m dam on the Toulnustouc River, 14 km downstream from the existing Lac-Saint-Anne dam, the creation of a new water expanse covering 22 square kilometers, the construction of an embankment, the strengthening of the existing Saint-Anne embankment, digging a 9.8 km gallery, and the construction of a flood spillway. This work would have consequences for three different sectors of the river: between the existing and the proposed dam, between the dam and the projected power plant, and between the power plant and the limit of the influence of the reservoir Manic-2. Hydro-Quebec would like the work to begin in July 2001, with the aim of having the plant in operation in 2005. The overall cost of the project is estimated at 600 million dollars. It is expected that the economic benefits for the region would be in the 211 million dollar range. An environmental assessment of the entire project was performed by Quebec Ministere de l'Environnement. The authors determined that the project was recognized as justified by the Ministere des Ressources Naturelles (Natural Resources Ministry) and concluded that the project was acceptable from an environmental point of view as long as six conditions were met. They touched on the construction of a flood spillway capable of evacuating 19 cubic meters per second at any time during the year, that water be evacuated downstream following a pre-determined debit that varies according to the time of year, monitoring of the brook trout population and its habitat, and environmental monitoring. 46 refs., 7 tabs., 2 figs., 1 annex

  8. 78 FR 48661 - Application for Presidential Permit; Soule River Hydroelectric Project: Correction

    Science.gov (United States)

    2013-08-09

    ... DEPARTMENT OF ENERGY [OE Docket No. PP-387] Application for Presidential Permit; Soule River Hydroelectric Project: Correction AGENCY: Office of Electricity Delivery and Energy Reliability, DOE. ACTION: Notice of Application; correction. SUMMARY: The Department of Energy (DOE) Office of Electricity Delivery...

  9. 77 FR 47058 - Middle Fork American River Hydroelectric Project Placer County Water Agency; Notice of Draft...

    Science.gov (United States)

    2012-08-07

    ... DEPARTMENT OF ENERGY Federal Energy Regulatory Commission [P-2079-069--CA] Middle Fork American River Hydroelectric Project Placer County Water Agency; Notice of Draft Environmental Impact Statement; Public Meetings a. Date and Time of Meetings: Tuesday, August 28, 2012, from 9:00 a.m. to 11:00 a.m. and...

  10. Status Review of Wildlife Mitigation, Columbia Basin Hydroelectric Projects, Columbia River Mainstem Facilities, 1984 Final Report.

    Energy Technology Data Exchange (ETDEWEB)

    Howerton, Jack; Hwang, Diana

    1984-11-01

    This report reviews the status of past, present, and proposed future wildlife planning and mitigation programs at existing hydroelectric projects in the Columbia River Basin. The project evaluations will form the basis for determining any needed remedial measures or additional project analysis. Each hydropower facility report is abstracted separately for inclusion in the Energy Data Base.

  11. 'Matka 2' Hydroelectric Power Plant slip in the chain hydro energetic objects of the Treska River

    International Nuclear Information System (INIS)

    Danevski, Stavre

    2004-01-01

    The paper deals with the project for rational use of the Treska River. The concept of this project is utilization of the hydro-power potential of the Treska River through the subsystem 'Kozjak-Matka' which encompasses realization of three cascade hydroelectric power plants. The proposed and accepted design concepts of the machine hall and plant facilities in HPP 'St. Petka' (formerly named HPP Matka 2) are presented

  12. A Computed River Flow-Based Turbine Controller on a Programmable Logic Controller for Run-Off River Hydroelectric Systems

    Directory of Open Access Journals (Sweden)

    Razali Jidin

    2017-10-01

    Full Text Available The main feature of a run-off river hydroelectric system is a small size intake pond that overspills when river flow is more than turbines’ intake. As river flow fluctuates, a large proportion of the potential energy is wasted due to the spillages which can occur when turbines are operated manually. Manual operation is often adopted due to unreliability of water level-based controllers at many remote and unmanned run-off river hydropower plants. In order to overcome these issues, this paper proposes a novel method by developing a controller that derives turbine output set points from computed mass flow rate of rivers that feed the hydroelectric system. The computed flow is derived by summation of pond volume difference with numerical integration of both turbine discharge flows and spillages. This approach of estimating river flow allows the use of existing sensors rather than requiring the installation of new ones. All computations, including the numerical integration, have been realized as ladder logics on a programmable logic controller. The implemented controller manages the dynamic changes in the flow rate of the river better than the old point-level based controller, with the aid of a newly installed water level sensor. The computed mass flow rate of the river also allows the controller to straightforwardly determine the number of turbines to be in service with considerations of turbine efficiencies and auxiliary power conservation.

  13. Hydroelectric power plant project on the Coulonge River: Report of inquiry and public hearing

    International Nuclear Information System (INIS)

    1992-01-01

    A hydroelectric power plant is proposed for the Coulonge River, a tributary of the Ottawa River in Quebec. Water would be taken from the river through a 609 m tunnel to the plant, which would contain two Francis turbines with a total installed power of 16.2 MW operating under a net head of 43 m and a water flow rate of 21.5 m 3 /s. Other works would be necessary upstream for controlling flow and protecting the intake. Total cost for the two-year construction project is estimated at $28 million and annual revenues are forecast at $6 million. An inquiry and public hearing were held to consider the biophysical, social, economic, and cultural impacts of the proposed hydroelectric project. Results of the hearing are summarized in such areas as legal aspects, environmental quality, water rights, land use, job creation, effects on tourism and recreation, effects on wildlife, water level fluctuations, water quality, and safety. The economic justification for the project is discussed with reference to electricity demand, economic viability, utilization factors, and policies that favor construction of small-scale hydroelectric plants. The project was not found to bring sufficient benefits to the region in which it was to be situated and would not be authorized unless Hydro-Quebec tariff policy with respect to small hydro plants was modified and unless the project sponsor compensates the regional municipality. 13 refs., 11 figs., 4 tabs

  14. Environmental Impact Assessment: Uri hydroelectric power project on River Jhelum in Kashmir, India

    International Nuclear Information System (INIS)

    Nyman, L.

    1995-09-01

    This report is an Initial Aquatic Environmental Impact Assessment of the Uri Hydroelectric Power Project on River Jhelum in Kashmir, India. It includes the Terms of Reference of the assessment, a discussion on biodiversity and threats to it, the environmental indicators used to monitor and predict the impacts, a description of the physical, chemical and biological prerequisites of the River Jhelum ecosystem, a description of the survey sites chosen, and an overview of the present fish and bottom fauna. Finally, there are sections on the potential impacts on biota of the Uri Project and a list of proposals for how mitigating and enhancing measures could be enforced

  15. Concession renewal of Kembs' hydroelectric head on the Rhine river

    International Nuclear Information System (INIS)

    Baron, P.; Defoug, H.; Petit, D.

    2000-07-01

    In order to evaluate the different impacts of the concession renewal of Kembs' water head on the Rhine river, all aspects have been considered and are reported in this document: international aspects, influence of the dam on navigation and floods, hydrology of Alsace plain, ecological, energetic and economical aspects, leisure and safety aspects. Several questions have to be put forward which concern the transfrontier relations, the water rights, the problem of derivations, of Rhine river maintenance, the turbine and water depth warranty problems, the flow rate and the restoration of the Rhine island. All these questions must be tackled by the impact study. The implementation of a local procedure follow up made of a permanent technical working group and of a management committee is recommended. (J.S.)

  16. Inputs from Indian rivers to the ocean: A synthesis

    Digital Repository Service at National Institute of Oceanography (India)

    DileepKumar, M.; George, M.D.; SenGupta, R.

    ). Fluxes of chemical substances to the Indian Ocean from these rivers are computed to a first approximation. The major ion contents are inversely proportional to the river runoff especially for the rivers entering the Arabian Sea. On an average Indian...

  17. Hydroelectric development project of the Magpie dam on the Magpie River: Investigation and public hearing report

    International Nuclear Information System (INIS)

    Harvey, A.; Journault, C.

    2004-08-01

    Public hearings were held by Quebec's Bureau d'audiences publiques sur l'environnement (BAPE) concerning a proposed hydroelectric development project on the Magpie River in Quebec's Minganie Region. The proposed hydroelectric power plant is to be developed and managed by Hydromega Services Inc. and constructed by Aecon Group Ltd. The project consists of reconstructing a power plant and dam at an existing site that was constructed in 1961 but which has been decommissioned since 1989. The installed capacity of the proposed power plant is 40.6 MW. The drop height for the dam is 21.25 metres. The issues that were addressed during the hearings included the opinions and suggestion of the participants regarding energy provisions, regional development and ecological protection. One of the main concerns facing this project is the loss of spectacular rapids currently used by rafters. The Commission noted that the rapids cannot be saved without significant modification to the design of the project. However, the flooding associated with the project would facilitate fishermen, canoeists and kayakers, thereby preserving the recreational and tourism attributes of the Magpie River. The Commission also noted that the local economic repercussions of the project would benefit the population of the Minganie Region which has a high unemployment rate. Any ecological impacts may be controlled by relevant attenuation measures and follow-up. It was concluded that the proposed project could contribute modestly to meeting the anticipated growth in energy demand in Quebec. refs., figs

  18. Physicochemical Characteristics of River Water Downstream of a Large Tropical Hydroelectric Dam

    Directory of Open Access Journals (Sweden)

    Teck-Yee Ling

    2016-01-01

    Full Text Available Water quality in the downstream river of a hydroelectric dam may be affected by the structural design and operation. To date, little is known about the water quality downstream of the largest dam in Malaysia, the Bakun hydroelectric dam. Therefore, the objective of the study was to determine the water quality downstream of the dam when the spillway was closed and when it was opened. Results of the study indicate that the dam plays a significant role in regulating the water quality downstream of it. When the spillway was closed, pH and oxygen were lower in the river where DO was below 5 mg/L. When the spillway was opened, the water quality improved in terms of oxygen content (>8.0 mg/L, total sulphide (TS, and chemical oxygen demand (COD but deteriorated in terms of five-day biochemical oxygen demand (BOD5, total ammonia nitrogen (TAN, and total phosphorus (TP. Additionally, the intensity of the impacts, particularly BOD5, COD, and TAN, shows a declining trend as distance from the dam increases. This study shows that impacts on the water quality extend to a distance of 32 km from the dam particularly turbidity and DO and opening the spillway changes the water quality significantly.

  19. Feasibility determination of low head hydroelectric power development at existing sites: Mousam River Project

    Energy Technology Data Exchange (ETDEWEB)

    1979-06-01

    The technical and economic feasibility of low head hydroelectric power development at existing sites along the Mousam River in southeastern Maine was studied. The following areas were investigated: determination of available energy; development of restoration concepts; environmental studies; historical and archeological studies; assessment of civil construction requirements; geotechnical and geologic assessment of existing dams; assessment of turbine alternatives; assessment of generator and utility interface alternatives; economic analysis; and restoration concept evaluation and selection. The results of the hydropower evaluation showed that: of the seven sites evaluated, only four can be considered economically feasible for refurbishment at this time; the use of used and/or rebuilt equipment is more economically attractive than new equipment; the cost of equipment at each site was of the same order as the cost of the dam reconstruction; and the cost of fuel prices will be the determining feature of whether the sites should be reconstructed.

  20. Evaluation Of Hydraulic Potentiality For The Generation Of Hydroelectric To Small Scale In The Basin Of The CHICAMOCHA River - Small Hydroelectric Centrals

    International Nuclear Information System (INIS)

    Pacheco P, Claudia M.; Parga C, Gloria M.

    1995-01-01

    In development of the agreement of technical and scientific cooperation established between the INEA and the Catholic University of Colombia, the program of Evaluation of Hydraulic Potentiality for Small Central was developed, whose purpose is to take the service to smaller population and villages of all the towns of the country. To begin the program the area corresponding to the basin of Chicamocha river was selected, since this region that corresponds to 72 towns of Boyaca and Santander, has good information, thanks to the diagnosis carried out by the Inderena with the purpose of formulating a Plan of Classification and Handling of the Basin. The work consisted on the identification of all the micro basins, the analysis of the demand of energy of the settled population, to evaluate the generating capacity of the flows of water and, according to the results, to propose alternatives for the design of small hydroelectric centrals (PCH) in accordance with the needs

  1. The effects of run-of-river hydroelectric power schemes on invertebrate community composition in temperate streams and rivers.

    Science.gov (United States)

    Bilotta, Gary S; Burnside, Niall G; Turley, Matthew D; Gray, Jeremy C; Orr, Harriet G

    2017-01-01

    Run-of-river (ROR) hydroelectric power (HEP) schemes are often presumed to be less ecologically damaging than large-scale storage HEP schemes. However, there is currently limited scientific evidence on their ecological impact. The aim of this article is to investigate the effects of ROR HEP schemes on communities of invertebrates in temperate streams and rivers, using a multi-site Before-After, Control-Impact (BACI) study design. The study makes use of routine environmental surveillance data collected as part of long-term national and international monitoring programmes at 22 systematically-selected ROR HEP schemes and 22 systematically-selected paired control sites. Five widely-used family-level invertebrate metrics (richness, evenness, LIFE, E-PSI, WHPT) were analysed using a linear mixed effects model. The analyses showed that there was a statistically significant effect (p<0.05) of ROR HEP construction and operation on the evenness of the invertebrate community. However, no statistically significant effects were detected on the four other metrics of community composition. The implications of these findings are discussed in this article and recommendations are made for best-practice study design for future invertebrate community impact studies.

  2. Environmental impact analysis of the hydroelectric power development sheme in the River Grunnaai in Seljord municipality, Telemark

    International Nuclear Information System (INIS)

    Muniz, I.P.; Bendiksen, E.; Erikstad, L.; Reitan, O.

    1997-01-01

    This report discusses the possible environmental consequences of a planned hydroelectric power development of the river Grunnaai, Norway. The consequences are found to be small, provided the proper counter measures are taken. Without counter measures, there may be moderate consequences on fish populations and botanical conditions, directly dependent on the changed water flow. The greatest value of the area concerned lies in its unspoiled wilderness character. There are extensive lists of birds and mammals and plant species registered in the river valley. 51 refs., 7 figs., 4 tabs

  3. Hydroelectric construction project on the Sheldrake River at Riviere-au-Tonnerre : public inquiry report

    International Nuclear Information System (INIS)

    2009-09-01

    The Societe d'Energie Riviere Sheldrake Inc. has proposed the construction of a hydroelectric facility on the Sheldrake River at Riviere-au-Tonnerre in the regional municipality of Minganie in Quebec. The project involves the construction of a headrace canal, intake, tunnel, powerhouse, access roads, electrical transmission line, spillway, weir and a bridge over the Sheldrake River. The proposed development was subject to an environmental evaluation process and public consultation. Quebec's environmental public hearing board held a public hearing on the draft development of the project to hear the concerns and views of the public and stakeholders. The hearing focused on a number issues, such as reasons for the project, its location and socio-economic impacts. The cumulative environmental effects of the project were also examined. The primary concerns were the economic repercussions of the project and its effect on tourism and fish, including salmon. The Board determined that the project would create jobs in a region affected by unemployment and the decay of its municipalities and that it would stimulate the local and regional economy. However, the Board determined that changes to the project are required to minimize impacts on the natural environment. The project proponent must monitor instream flows to ensure that fish passage facilities meet regulations. In addition, since the proposed project crosses 3 bogs, the developer must compensate for lost wetlands. A 10-year follow-up is required to assess the recovery of these environments. The developer must also maintain the aesthetic quality of the Courbe du Sault Falls in order to maintain the eco-tourism in the region. refs., figs.

  4. Comparative water quality assessment between a young and a stabilized hydroelectric reservoir in Aliakmon River, Greece.

    Science.gov (United States)

    Samiotis, Georgios; Trikoilidou, Eleni; Tsikritzis, Lazaros; Amanatidou, Elisavet

    2018-03-20

    In this work, a comparative study on the water quality characteristics of two in-line water reservoirs (artificial lakes) in Aliakmon River (Western Macedonia, Greece) is performed. Polyfytos Reservoir and Ilarion Reservoir were created in 1975 and 2012 respectively, in order to serve the homonymous hydroelectric stations. In young artificial lakes, severe deterioration of water quality may occur; thus, the monitoring and assessment of their water quality characteristics and their statistical interpretation are of great importance. In order to evaluate any temporal or spatial variations and to characterize water quality of these two in-line water reservoirs, water quality data from measurements conducted from 2012 to 2015 were statistically processed and interpreted by using a modified National Sanitation Foundation water quality index (WQI). The water physicochemical characteristics of the two reservoirs were found to be generally within the legislation limits, with relatively small temporal and spatial variations. Although Polyfytos Reservoir showed no significant deviations of its water quality, Ilarion Reservoir exhibited deviations in total Kjeldahl nitrogen, nitrite nitrogen, total suspended solids, and turbidity due to the inundated vegetation decomposition. The conducted measurements and the use of the modified NSFWQI revealed that during the inundation period of Ilarion Reservoir, its water quality was "moderate" and that the deviations were softened through time, leading to "good" water quality during its maturation period. Three years since the creation of Ilarion Reservoir, water quality does not match that of Aliakmon River (feeding water) or that of the stabilized reservoir (Polyfytos Reservoir), whose quality is characterized as "high." The use of a WQI, such as the proposed modified NSFWQI, for evaluating water quality of each sampling site and of an entire water system proved to be a rapid and relatively accurate assessment tool.

  5. Knife River Indian Villages National Historic Site: Teacher's Guide.

    Science.gov (United States)

    National Park Service (Dept. of Interior), Washington, DC. National Register of Historic Places.

    This guide provides history and social studies teachers, at all grade levels, with information and activities about the American Indians of the Northern Plains who lived in the area of the Knife River where it enters the Missouri River. Located in what is now North Dakota, this area is the Knife River Indian Villages National Historic Site. The…

  6. The Effects of Run-of-River Hydroelectric Power Schemes on Fish Community Composition in Temperate Streams and Rivers.

    Science.gov (United States)

    Bilotta, Gary S; Burnside, Niall G; Gray, Jeremy C; Orr, Harriet G

    2016-01-01

    The potential environmental impacts of large-scale storage hydroelectric power (HEP) schemes have been well-documented in the literature. In Europe, awareness of these potential impacts and limited opportunities for politically-acceptable medium- to large-scale schemes, have caused attention to focus on smaller-scale HEP schemes, particularly run-of-river (ROR) schemes, to contribute to meeting renewable energy targets. Run-of-river HEP schemes are often presumed to be less environmentally damaging than large-scale storage HEP schemes. However, there is currently a lack of peer-reviewed studies on their physical and ecological impact. The aim of this article was to investigate the effects of ROR HEP schemes on communities of fish in temperate streams and rivers, using a Before-After, Control-Impact (BACI) study design. The study makes use of routine environmental surveillance data collected as part of long-term national and international monitoring programmes at 23 systematically-selected ROR HEP schemes and 23 systematically-selected paired control sites. Six area-normalised metrics of fish community composition were analysed using a linear mixed effects model (number of species, number of fish, number of Atlantic salmon-Salmo salar, number of >1 year old Atlantic salmon, number of brown trout-Salmo trutta, and number of >1 year old brown trout). The analyses showed that there was a statistically significant effect (pcomposition. The implications of these findings are discussed in this article and recommendations are made for best-practice study design for future fish community impact studies.

  7. Refurbishment and upgrading of Iron Gates I Hydroelectric and Navigation System on the Danube River

    International Nuclear Information System (INIS)

    Scvortov, F.; Vasiliu, A.; Rosca, N.

    1996-01-01

    This work shows the problems of the refurbishing the hydroelectric units of the Iron Gates 1 Hydroelectric and Navigation System, operating since 1970. Their long and intensive utilization leads to the necessity of their refurbishment. One is demonstrated by detailed studies that it is sensible and efficient to perform both rehabilitation of the existent hydroelectric units and their power increasing from 175 MW to 190 MW, and prior to all these, as a first step, to install an additional hydroelectric unit (G7) for each system with a capacity of 190 MW. Complex technical and energetic-economical problems appear in realizing this objective due to the necessity of analysing a great volume of data in view of taking a correct decision. (author). 7 figs

  8. Report on the workshop examining the potential effects of hydroelectric development on Beluga of the Nelson River Estuary, Winnipeg, Manitoba, November 6 and 7, 1990

    International Nuclear Information System (INIS)

    Lawrence, M.J.; Paterson, M.; Baker, R.F.; Schmidt, R.

    1992-01-01

    A summary is presented of discussions and conclusions at a workshop held to examine the potential effects of hydroelectric development on beluga whales of the Nelson River estuary in Manitoba. Background information is provided on the estuary, beluga whales and their use of arctic and subarctic estuaries, and hydroelectric development on the Nelson River. Potential impacts of such development on the whales are reviewed in the categories of direct effects of changes in physical-chemical conditions (temperature and discharge), indirect effects of disturbances mediated through the food chain, and effects on socioeconomic conditions that may affect beluga whales. Since the biology of beluga whales and other phenomena of interest in this study are poorly known, recommendations are made for research and monitoring activities in the Nelson River estuary. In general, the workshop participants felt that changes in the estuary due to hydroelectric development would not be large enough to affect beluga whales strongly. 34 refs., 1 fig

  9. A report on the fisheries resources of the lower Nelson River and the impacts of hydroelectric development, 1988 data

    International Nuclear Information System (INIS)

    Swanson, G.M.; Kansas, K.R.; Matkowski, S.M.

    1990-01-01

    Fisheries studies on the lower Nelson River (Manitoba) system have had the goals of gaining an understanding of the fisheries resources present, assessing current and potential impacts of hydroelectric developments, and investigating enhancement or mitigative options. In 1988, a resource inventory of McMillan and 12-Mile Creeks was conducted to increase understanding of brook trout stocks in the Limestone River system. Results indicate that both streams contain self-sustaining populations. Baseline data collection in the Conawapa Forebay of the Nelson River was initiated in 1988. Inventories of fish populations were conducted, focusing on lake sturgeon. Three long-term monitoring projects were continued in 1988, investigating the populations of spawning brook trout, larval brook trout, and anadromy in brook trout. Four major tributaries to the Nelson River were classified on the basis of physical and chemical characteristics in an attempt to understand brook trout distribution patterns. Ten sturgeon were captured in Angling Lake in 1988 and fitted with radio tags to assess the importance of the Angling Lake-Angling River system to Nelson River lake sturgeon. To investigate the feasibility of enhancing brook trout populations in the Nelson River system, baskets of eggs were planted in previously identified spawning areas in three creeks in 1988. The eggs developed and hatched only in CN Creek. The potential for rehabilitating the Kettle River brook trout population by transfer of fish from other rivers was also investigated in 1988. Radio-tagged fish remained in the Kettle River-Long Spruce system throughout the life of the tags and appear to have found suitable summer and winter habitat. 60 refs., 76 figs., 38 tabs

  10. Hydroelectric power generation in an Alpine basin: future water-energy scenarios in a run-of-the-river plant

    Science.gov (United States)

    Bongio, Marco; Avanzi, Francesco; De Michele, Carlo

    2016-08-01

    We investigate scenarios of hydroelectric power generation for an Alpine run-of-the-river plant in 2050. To this end, we include a conversion from streamflow to energy in a hydrological model of the basin, and we introduce a set of benchmark climate scenarios to evaluate expected future production. These are a "future-like-present" scenario assuming future precipitation and temperature inputs to be statistically equivalent to those observed during the recent past at the same location, a "warmer-future" scenario, which considers an additional increase in temperature, and a "liquid-only" scenario where only liquid precipitation is admitted. In addition, two IPCC-like climatic scenarios (RCP 4.5 and RCP 8.5) are considered. Uncertainty in glaciers' volume is accounted by initializing the hydrological model with two different inventories of glaciers. Ensemble results reveal that 1) an average decrease between -40% and -19% of hydroelectric power generation in 2050 is predicted at the plant considered (with respect to present condition); 2) an average decrease between -20% and -38% of cumulative incoming streamflow volume at the plant is also predicted, again with respect to present condition; 3) these effects are associated with a strong average decrease of the volume of glaciers (between -76% and -96%, depending on the initial value considered). However, Monte Carlo simulations show that results are also prone to high uncertainties. Implications of these results for run-of-the-river plants are discussed.

  11. Environmental study of the Wairakei Power Plant. [Effects of hydroelectric power plant on ecology of Waikato River Basin, New Zealand

    Energy Technology Data Exchange (ETDEWEB)

    Axtmann, R C

    1974-12-01

    Physical, chemical, biological, ecological, and aesthetic aspects of the Wairakei Power Plant are examined, in varying detail, but with primary emphasis on the chemical and thermal effluents. When flows are average or higher in the Waikato River, the Plant's environmental effects are not overly severe. However, operating requirements for the Waikato Hydro-electric System are such that the Plant sporadically produces wastes that may affect the human and natural environment adversely. These adverse effects are not presently too serious, but suggestions are made for improving the Plant's overall environmental performance. Although the point is not discussed in detail, it is clear from the results of the study that any additional thermal plants on the Waikato could strain the river's absorptive capacities severely, unless alternative disposal techniques are used for the various effluents.

  12. The effects of hydroelectric gates on rivers, hydro-ecological diagnostic and management aid. The Fontauliere example (Ardeche)

    International Nuclear Information System (INIS)

    Valentin, S.

    1996-01-01

    Hydropower generation induces artificial fluctuations of flow and thus of hydrodynamic parameters in rivers, downstream of hydroelectric impoundments. On the Fontauliere river (Ardeche basin, France), the ecological effects of two different hydro-peaking regimes were tested and compared to a reference upstream reach. Fish, invertebrate and epilithic communities were surveyed in these reaches. The results enables to classify the factors responsible for the observed effects. The base flow between peaks was the most important for the studied site. When it was too low, aquatic communities were de-structured in comparison with the natural reach. These results enabled to suggest a current velocity threshold to respect in order to determine acceptable base flow for this type of stream. They also enabled to guide for the impact evaluation of hydro-peaking sites. An ecological diagnosis should include the study of the structure and composition of the communities. (author). 22 refs., 2 figs., 4 tabs

  13. The impacts of wind power integration on sub-daily variation in river flows downstream of hydroelectric dams.

    Science.gov (United States)

    Kern, Jordan D; Patino-Echeverri, Dalia; Characklis, Gregory W

    2014-08-19

    Due to their operational flexibility, hydroelectric dams are ideal candidates to compensate for the intermittency and unpredictability of wind energy production. However, more coordinated use of wind and hydropower resources may exacerbate the impacts dams have on downstream environmental flows, that is, the timing and magnitude of water flows needed to sustain river ecosystems. In this paper, we examine the effects of increased (i.e., 5%, 15%, and 25%) wind market penetration on prices for electricity and reserves, and assess the potential for altered price dynamics to disrupt reservoir release schedules at a hydroelectric dam and cause more variable and unpredictable hourly flow patterns (measured in terms of the Richards-Baker Flashiness (RBF) index). Results show that the greatest potential for wind energy to impact downstream flows occurs at high (∼25%) wind market penetration, when the dam sells more reserves in order to exploit spikes in real-time electricity prices caused by negative wind forecast errors. Nonetheless, compared to the initial impacts of dam construction (and the dam's subsequent operation as a peaking resource under baseline conditions) the marginal effects of any increased wind market penetration on downstream flows are found to be relatively minor.

  14. Guidelines for the environmental impact statement for the proposed Great Whale River Hydroelectric Project. Backgorund information

    International Nuclear Information System (INIS)

    1992-09-01

    The guidelines presented on the preparation of the environmental impact statement for the Great Whale hydroelectric project by Hydro-Quebec stipulated a project justification, description of the biophysical and social environments, a project description, and that the assessment must address project impacts, mitigative and compensatory measures, environmental surveillance, monitoring, and long-term management programs. Background information presented in this document provides technical notes on the guidelines and the environmental assessment process, a glossary of terms, and biographical notes. The technical notes address guideline structure, project justification, native knowledge, evaluation issues, cumulative impacts, and the assessment and review process

  15. Guidelines for the environmental impact statement for the proposed Great Whale River Hydroelectric Project

    International Nuclear Information System (INIS)

    1992-01-01

    The guidelines presented on the preparation of the environmental impact statement for the Great Whale hydroelectric project by Hydro-Quebec stipulated a project justification, description of the biophysical and social environments, a project description, and that the assessment must address project impacts, mitigative and compensatory measures, environmental surveillance, monitoring, and long-term management programs. Background information presented in this document provides technical notes on the guidelines and the environmental assessment process, a glossary of terms, and biographical notes. The technical notes address guideline structure, project justification, native knowledge, evaluation issues, cumulative impacts, and the assessment and review process

  16. Environmental impact statement for the proposed Great Whale River Hydroelectric Project

    International Nuclear Information System (INIS)

    1992-01-01

    Guidelines are presented on the preparation of the environmental impact statement for the Great Whale hydroelectric project by Hydro-Quebec. The statement must include a project justification, description of the biophysical and social environments, a project description, and must address project impacts, mitigative and compensatory measures, environmental surveillance, monitoring, and long-term management programs. Appendices include a memorandum of understanding, list of members of the review bodies, list of briefs submitted at the public scoping hearings, and a list of public comments on the draft guidelines. 17 figs

  17. Output improvement of Sg. Piah run-off river hydro-electric station with a new computed river flow-based control system

    Science.gov (United States)

    Jidin, Razali; Othman, Bahari

    2013-06-01

    The lower Sg. Piah hydro-electric station is a river run-off hydro scheme with generators capable of generating 55MW of electricity. It is located 30km away from Sg. Siput, a small town in the state of Perak, Malaysia. The station has two turbines (Pelton) to harness energy from water that flow through a 7km tunnel from a small intake dam. The trait of a run-off river hydro station is small-reservoir that cannot store water for a long duration; therefore potential energy carried by the spillage will be wasted if the dam level is not appropriately regulated. To improve the station annual energy output, a new controller based on the computed river flow has been installed. The controller regulates the dam level with an algorithm based on the river flow derived indirectly from the intake-dam water level and other plant parameters. The controller has been able to maintain the dam at optimum water level and regulate the turbines to maximize the total generation output.

  18. Output improvement of Sg. Piah run-off river hydro-electric station with a new computed river flow-based control system

    International Nuclear Information System (INIS)

    Jidin, Razali; Othman, Bahari

    2013-01-01

    The lower Sg. Piah hydro-electric station is a river run-off hydro scheme with generators capable of generating 55MW of electricity. It is located 30km away from Sg. Siput, a small town in the state of Perak, Malaysia. The station has two turbines (Pelton) to harness energy from water that flow through a 7km tunnel from a small intake dam. The trait of a run-off river hydro station is small-reservoir that cannot store water for a long duration; therefore potential energy carried by the spillage will be wasted if the dam level is not appropriately regulated. To improve the station annual energy output, a new controller based on the computed river flow has been installed. The controller regulates the dam level with an algorithm based on the river flow derived indirectly from the intake-dam water level and other plant parameters. The controller has been able to maintain the dam at optimum water level and regulate the turbines to maximize the total generation output.

  19. Case study analysis of legal and institutional obstacles and incentives to the development of the hydroelectric potential at Goose River, Maine

    Energy Technology Data Exchange (ETDEWEB)

    None,

    1980-05-01

    The case study is an analysis of the legal, institutional, and financial incentives and obstacles to the development of the hydroelectric potential on the Goose River in Maine. The Goose River project concerns development by a private developer, Maine Hydro-Electric Development Corporation. The project is comprised of a five-dam system, with the first dam located at Swan Lake and the fifth dam about one mile from the sea. It will utilize the 7500 acre-feet of storage capacity of Swan Lake to run the four downstream power stations. The system is designed to generate 430 kWs of total capacity which would be sold to Central Maine Power, the local investor-owned public utility.

  20. [Fishery resource protection by artificial propagation in hydroelectric development: Lixianjiang River drainage in Yunnan as an example].

    Science.gov (United States)

    Yang, Yong-Hong; Yang, Jun-Xing; Pan, Xiao-Fu; Zhou, Wei; Yang, Mei-Lin

    2011-04-01

    Hydroelectric developments can result in a number of negative environmental consequences. Conservation aquaculture is a branch of science derived from conservation and population recovery studies on endangered fishes. Here we discuss the impacts on fishes caused by hydropower projects in Lixianjiang, and evaluate effects and problems on the propagation of Parazacco spilurus, Hemibagrus pluriradiatus, Neolissochilus benasi and Semilabeo obscurus. A successful propagation project includes foraging ecology in fields, pond cultivation, juvenile fish raising, prevention and curing on fish disease, genetic management, artificial releasing and population monitoring. Artificial propagation is the practicable act on genetic intercommunication, preventing population deterioration for fishes in upper and lower reaches of the dam. For long-term planning, fish stocks are not suitable for many kind of fishes, but can prevent fishes from going extinct in the wild. Basic data collection on fish ecology, parent fish hunting, prevention on fish disease are the most important factors on artificial propagation. Strengthening the genetic management of stock population for keeping a higher genetic diversity can increase the success of stock enhancement. The works on Lixianjiang provide a new model for river fish protection. To make sure the complicated project works well, project plans, commission contracts, base line monitoring and techniques on artificial reproduction must be considered early. Last, fishery conservation should be considered alongside location development.

  1. Environmental impact analysis of the hydroelectric power development sheme in the River Grunnaai in Seljord municipality, Telemark; Konsekvensutredning av kraftutbyggingsprosjekt i Grunnaai i Seljord, Telemark

    Energy Technology Data Exchange (ETDEWEB)

    Muniz, I.P.; Bendiksen, E.; Erikstad, L.; Reitan, O.

    1997-12-31

    This report discusses the possible environmental consequences of a planned hydroelectric power development of the river Grunnaai, Norway. The consequences are found to be small, provided the proper counter measures are taken. Without counter measures, there may be moderate consequences on fish populations and botanical conditions, directly dependent on the changed water flow. The greatest value of the area concerned lies in its unspoiled wilderness character. There are extensive lists of birds and mammals and plant species registered in the river valley. 51 refs., 7 figs., 4 tabs.

  2. Nitrogen loading and nitrous oxide emissions from a river with multiple hydroelectric reservoirs.

    Science.gov (United States)

    Chen, Jinsong; Cao, Wenzhi; Cao, Di; Huang, Zheng; Liang, Ying

    2015-05-01

    River networks receive a large fraction of the anthropogenic nitrogen applied to river catchments. The different impacts of the stream nitrogen (N) loading on nitrous oxide (N2O) emissions from various of aquatic ecosystems are still unknown. In this study, direct measurements of water-air interface N2O exchange in different water bodies were conducted. Results showed that the water-air interface N2O exchange from tributaries, hydropower station reservoirs, a main stream, and its estuary were 10.14 ± 13.51, 15.64 ± 10.72, 27.59 ± 20.99, and 15.98 ± 12.26 µg N2O-N m(-2) h(-1), respectively, indicating the strong impacts of human activities on N2O emission rates. The water NO2 (-)-N values predicted the dissolved N2O concentrations better than did the NO3 (-)-N and NH4 (+)-N values, indicating strong denitrification and nitrification processes. The dissolved inorganic N explained 36 % of the variations in the N2O emissions for the whole river network.

  3. Oregon Trust Agreement Planning Project : Potential Mitigations to the Impacts on Oregon Wildlife Resources Associated with Relevant Mainstem Columbia River and Willamette River Hydroelectric Projects.

    Energy Technology Data Exchange (ETDEWEB)

    United States. Bonneville Power Administration.

    1993-10-01

    A coalition of the Oregon wildlife agencies and tribes (the Oregon Wildlife Mitigation Coalition) have forged a cooperative effort to promote wildlife mitigation from losses to Oregon wildlife resources associated with the four mainstream Columbia River and the eight Willamette River Basin hydroelectric projects. This coalition formed a Joint Advisory Committee, made up of technical representatives from all of the tribes and agencies, to develop this report. The goal was to create a list of potential mitigation opportunities by priority, and to attempt to determine the costs of mitigating the wildlife losses. The information and analysis was completed for all projects in Oregon, but was gathered separately for the Lower Columbia and Willamette Basin projects. The coalition developed a procedure to gather information on potential mitigation projects and opportunities. All tribes, agencies and interested parties were contacted in an attempt to evaluate all proposed or potential mitigation. A database was developed and minimum criteria were established for opportunities to be considered. These criteria included the location of the mitigation site within a defined area, as well as other criteria established by the Northwest Power Planning Council. Costs were established for general habitats within the mitigation area, based on estimates from certified appraisers. An analysis of the cost effectiveness of various types of mitigation projects was completed. Estimates of operation and maintenance costs were also developed. The report outlines strategies for gathering mitigation potentials, evaluating them, determining their costs, and attempting to move towards their implementation.

  4. Fluvial hydrology and geomorphology of Monsoon-dominated Indian rivers

    Directory of Open Access Journals (Sweden)

    Vishwas S. Kale

    2005-11-01

    Full Text Available The Indian rivers are dominantly monsoon rainfed. As a result, their regime characteristics are dictated by the spatio-temporal variations in the monsoon rainfall. Although the rivers carry out most of the geomorphic work during 4-5 months of the monsoon season, the nature and magnitude of response to variations in the discharge and sediment load varies with the basin size and relief characteristics. Large monsoon floods play a role of great importance on all the rivers. This paper describes the hydrological and geomorphological characteristics of the two major fluvial systems of the Indian region, namely the Himalayan fluvial system and the Peninsular fluvial system. Large number of studies published so far indicate that there are noteworthy differences between the two river systems, with respect to river hydrology, channel morphology, sediment load and behaviour. The nature of alterations in the fluvial system due to increased human interference is also briefly mentioned. This short review demonstrates that there is immense variety of rivers in India. This makes India one of the best places to study rivers and their forms and processes.

  5. Urban green areas as the starting point for planning hydroelectric and urban developments: The case of the Sava River in the City of Ljubljana

    Directory of Open Access Journals (Sweden)

    Aleš Mlakar

    2008-01-01

    Full Text Available The article deals with the landscape and urbanistic layout of the Sava River space and North part of the Bežigrad stretch of Ljubljana. Focus is on methodological and content starting points for the layout preparation and development of urban green areas of the wider Sava River space, which as a connecting link and simultaneously independent spatial and functional entity represents the starting point for planning hydro-energetic and urban arrangements. The necessity of recognising and resolving real spatial planning issues, formulation of clear goals and concepts, confrontation of different spatial systems and interests, as well as the sensibility of devising alternative development scenarios are emphasised. One of the most important starting points of the proposed layout is comprehensive design of public open spaces and green areas. The urbanistic solution relies on a programmatically strong, distinct and structured Dunajska Street, which should transform into the public space of a modern urban artery, with a clear ending that simultaneously gradually adapts to the morphology akin to the surroundings and Sava River space. Because of its natural characteristics, preserved cultural landscape and good accessibility, this area has great potential for development of leisure activities. The proposed solution stems from the fact that the chain of hydro-electric plants shouldn't be seen as buildings with negative environmental effects, but also as development opportunities – the actual execution of a recreation area along the Sava River and a method for rehabilitating the degraded spaces. Comprehensive solutions along the river have been proposed as parts of the hydro-electric developments, with special attention focusing on active design of various riverbank types.

  6. Effects from Tucurui Hydroelectric Power Plant on ichthyofauna composition of experimental fisheries by gillnets in Lower Tocantins River, Para State, Brazil

    International Nuclear Information System (INIS)

    Ataliba Nogueira Leite, Regina de.

    1993-01-01

    Tucurui was the first big hydroelectric built in the Brazilian Amazonia (river Tocantins, Para). About 2400 Km 2 of Tropical Rain Forest was inundated. This work attempts to describe some effects of the Tucurui dam upon fish communities of the lower Tocantins river. Surveys of fish communities on the Tocantins were carried out by INPA, before and after the impoudment. Fishes belonging to 223 species was sampled by gillnets. After the impoudment, the average of species richness of the communities was reduced in 42% and 50%, respectively downstream and upstream the dam. In the reservoir, where rapids were flooded, species specialized in this habitats virtually disappeared during and after the filling up phase. The relative contribution of the illiophagous, that dominated the samples before the dam closure, downed, while there has been a sudden widespread of fish predators species in the reservoir. These predators dominated until the third year after the impoudment. The cluster analysis provide evidences that, between the species that take advantages of the impoundment, exist a clear succession of dominance. Until the end of sampling period all the study-area remained very instable, so is difficult to foresee the future composition or structure of the communities in the area under influence of Tucurui's Hydroelectric Dam. (author). 68 refs., 46 figs., 12 tabs

  7. Accumulated effects on landscape pattern by hydroelectric cascade exploitation in the Yellow River basin from 1977 to 2006

    NARCIS (Netherlands)

    Ouyang, W.; Skidmore, A.K.; Hao, F.H.; Toxopeus, A.G.; Abkar, A.

    2009-01-01

    The accumulated impacts of hydroelectric cascade exploitation (HCE) on the landscape are greater than the simple sum of the impacts from a single dam. The spatial–temporal landscape characteristics resulting from the accumulated impacts of HCE from 1977 to 2006 in Longliu Watershed, a part of the

  8. Downstream passage and impact of turbine shutdowns on survival of silver American Eels at five hydroelectric dams on the Shenandoah River

    Science.gov (United States)

    Eyler, Sheila; Welsh, Stuart A.; Smith, David R.; Rockey, Mary

    2016-01-01

    Hydroelectric dams impact the downstream migrations of silver American Eels Anguilla rostrata via migratory delays and turbine mortality. A radiotelemetry study of American Eels was conducted to determine the impacts of five run-of-the-river hydroelectric dams located over a 195-km stretch of the Shenandoah River, Virginia–West Virginia, during fall 2007–summer 2010. Overall, 96 radio-tagged individuals (mean TL = 85.4 cm) migrated downstream past at least one dam during the study. Most American Eels passed dams relatively quickly; over half (57.9%) of the dam passage events occurred within 1 h of reaching a dam, and most (81.3%) occurred within 24 h of reaching the dam. Two-thirds of the dam passage events occurred via spill, and the remaining passage events were through turbines. Migratory delays at dams were shorter and American Eels were more likely to pass via spill over the dam during periods of high river discharge than during low river discharge. The extent of delay in migration did not differ between the passage routes (spill versus turbine). Twenty-eight American Eels suffered turbine-related mortality, which occurred at all five dams. Mortality rates for eels passing through turbines ranged from 15.8% to 40.7% at individual dams. Overall project-specific mortality rates (with all passage routes combined) ranged from 3.0% to 14.3%. To protect downstream-migrating American Eels, nighttime turbine shutdowns (1800–0600 hours) were implemented during September 15–December 15. Fifty percent of all downstream passage events in the study occurred during the turbine shutdown period. Implementation of the seasonal turbine shutdown period reduced cumulative mortality from 63.3% to 37.3% for American Eels passing all five dams. Modifying the turbine shutdown period to encompass more dates in the spring and linking the shutdowns to environmental conditions could provide greater protection to downstream-migrating American Eels.

  9. 78 FR 28826 - Lakeport Hydroelectric Associates, Lakeport Hydroelectric Corporation, Lakeport Hydroelectric One...

    Science.gov (United States)

    2013-05-16

    ... Hydroelectric Associates, Lakeport Hydroelectric Corporation, Lakeport Hydroelectric One, LLC; Notice of..., Lakeport Hydroelectric Associates and Lakeport Hydroelectric Corporation (transferors) and Lakeport Hydroelectric One, LLC (transferee) filed an application for the transfer of license for the Lakeport Project...

  10. Phytoplankton of the portion of the Paranapanema River to be dammed for construction of the Rosana Hydroelectric Plant, Sao Paulo State, Southern Brazil; Fitoplancton do trecho a represar do Rio Paranapanema (Usina Hidreletrica de Rosana), Estado de Sao Paulo, Brasil

    Energy Technology Data Exchange (ETDEWEB)

    Bicudo, Carlos E. de M.; Bicudo, Denise de C.; Castro, Ana Alice J. de; Picelli-Vicentim, M. Marcina [Instituto de Botanica, Sao Paulo, SP (Brazil). Secao de Ficologia

    1992-12-31

    The phytoplankton community of the 120 Km long portion of the Paranapanema River located between the Salto Grande Hydroelectric Plant reservoir and the river mouth at the Parana River is surveyed. This part of the river will be dammed for construction of the Rosana hydroelectric System in the State of Sao Paulo, southern Brazil. An inventory was completed for 4 collecting stations, and based on the study of 48 samples gathered bimonthly during the period from November 1985 to September 1986. Each collection is represented by a net concentrated and a raw total phytoplankton sample. Except for the Bacillariophyceae, study of which is still in progress, the other classes present were the following in order of their local representation: Chlorophyceae with 23 taxa, Zygnemaphyceae (= Cyanophyceae) with 9, Tribophyceace (= Xanthophyceae) with 2 each one, and Oedogoniophyceae, Euglenophyceae and Chrysophyceae with a single taxon each, to a total of 55 taxa identified. (author) 27 refs., 6 figs.

  11. Status Review of Wildlife Mitigation at 14 of 27 Major Hydroelectric Projects in Idaho, 1983-1984 Final Report.

    Energy Technology Data Exchange (ETDEWEB)

    Martin, Robert C.; Mehrhoff, L.A.

    1985-01-01

    The Pacific Northwest Electric Power Planning and Conservation Act and wildlife and their habitats in the Columbia River Basin and to compliance with the Program, the wildlife mitigation status reports coordination with resource agencies and Indian Tribes. developed the Columbia River Basin Fish and Wildlife Program development, operation, and maintenance of hydroelectric projects on existing agreements; and past, current, and proposed wildlife factual review and documentation of existing information on wildlife meet the requirements of Measure 1004(b)(l) of the Program. The mitigation, enhancement, and protection activities were considered. In mitigate for the losses to those resources resulting from the purpose of these wildlife mitigation status reports is to provide a resources at some of the Columbia River Basin hydroelectric projects the river and its tributaries. To accomplish this goal, the Council were written with the cooperation of project operators, and in within Idaho.

  12. Hydroelectric production from Brazil's São Francisco River could cease due to climate change and inter-annual variability.

    Science.gov (United States)

    de Jong, Pieter; Tanajura, Clemente Augusto Souza; Sánchez, Antonio Santos; Dargaville, Roger; Kiperstok, Asher; Torres, Ednildo Andrade

    2018-09-01

    By the end of this century higher temperatures and significantly reduced rainfall are projected for the Brazilian North and Northeast (NE) regions due to Global Warming. This study examines the impact of these long-term rainfall changes on the Brazilian Northeast's hydroelectric production. Various studies that use different IPCC models are examined in order to determine the average rainfall reduction by the year 2100 in comparison to baseline data from the end of the 20th century. It was found that average annual rainfall in the NE region could decrease by approximately 25-50% depending on the emissions scenario. Analysis of historical rainfall data in the São Francisco basin during the last 57years already shows a decline of more than 25% from the 1961-90 long-term average. Moreover, average annual rainfall in the basin has been below its long-term average every year bar one since 1992. If this declining trend continues, rainfall reduction in the basin could be even more severe than the most pessimistic model projections. That is, the marked drop in average rainfall projected for 2100, based on the IPCC high emissions scenario, could actually eventuate before 2050. Due to the elasticity factor between rainfall and streamflow and because of increased amounts of irrigation in the São Francisco basin, the reduction in the NE's average hydroelectric production in the coming decades could be double the predicted decline in rainfall. Conversely, it is estimated that wind power potential in the Brazilian NE will increase substantially by 2100. Therefore both wind and solar power will need to be significantly exploited in order for the NE region to sustainably replace lost hydroelectric production. Copyright © 2018 Elsevier B.V. All rights reserved.

  13. Environmental analysis report for the hydroelectric project on the Sheldrake River in the Courbe du Sault section in the municipality of Riviere-au-Tonnerre by the Societe d'energie riviere Sheldrake Inc

    International Nuclear Information System (INIS)

    Michaud, A.; Paul, M.; Brunet, G.

    2010-01-01

    The Societe d'energie riviere Sheldrake Inc. (SERS Inc.) is planning to exploit the hydroelectric potential of the Sheldrake River in the Quebec municipality of Riviere au Tonnere. The proposed project will involve building a hydroelectric power station with a maximum capacity of 25 MW on the Sheldrake River, in the Courbe du Sault section. The project will also comprise a dam, a water reservoir and an overflow spillway. The project meets the province's 2006-2015 energy strategy to develop small-scale hydroelectric facilities. The project was subject to an environmental assessment as required by the province of Quebec. This environmental analysis addressed the major challenges facing the hydroelectric development at the Courbe du Sault section of the River, notably the impact on fish habitat, wetlands and the local and regional economic benefits. The environmental assessment did not indicate any habitat destruction for trout or salmon in the forebay. The Quebec Ministry of Sustainable Development, Environment and Parks has deemed the project to be acceptable given that certain conditions are met, including thresholds to stabilize the water level and the construction of a downstream fish passage facility to allow for safe fish migration. 22 refs., 2 tabs., 5 figs., 3 appendices.

  14. The Influence of Changes in Lifestyle and Mercury Exposure in Riverine Populations of the Madeira River (Amazon Basin near a Hydroelectric Project

    Directory of Open Access Journals (Sweden)

    Sandra S. Hacon

    2014-02-01

    Full Text Available In the Amazon Basin, naturally occurring methylmercury bioaccumulates in fish, which is a key source of protein consumed by riverine populations. The hydroelectric power-plant project at Santo Antônio Falls allows us to compare the Hg exposure of riverine populations sparsely distributed on both sides of the Madeira river before the area is to be flooded. From 2009 to 2011, we concluded a population survey of the area (N = 2,008; representing circa 80% of community residents that estimated fish consumption and mercury exposure of riverine populations with different degrees of lifestyle related to fish consumption. Fish samples from the Madeira river (N = 1,615 and 110 species were analyzed for Hg. Hair-Hg was significantly lower (p < 0.001 in less isolated communities near to the capital of Porto Velho (median 2.32 ppm than in subsistence communities in the Cuniã Lake, 180 km from Porto Velho city (median 6.3 ppm. Fish Hg concentrations ranged from 0.01 to 6.06 µg/g, depending on fish size and feeding behavior. Currently available fish in the Madeira river show a wide variability in Hg concentrations. Despite cultural similarities, riparians showed hair-Hg distribution patterns that reflect changes in fish-eating habits driven by subsistence characteristics.

  15. The influence of changes in lifestyle and mercury exposure in riverine populations of the Madeira River (Amazon Basin) near a hydroelectric project.

    Science.gov (United States)

    Hacon, Sandra S; Dórea, José G; Fonseca, Márlon de F; Oliveira, Beatriz A; Mourão, Dennys S; Ruiz, Claudia M V; Gonçalves, Rodrigo A; Mariani, Carolina F; Bastos, Wanderley R

    2014-02-26

    In the Amazon Basin, naturally occurring methylmercury bioaccumulates in fish, which is a key source of protein consumed by riverine populations. The hydroelectric power-plant project at Santo Antônio Falls allows us to compare the Hg exposure of riverine populations sparsely distributed on both sides of the Madeira river before the area is to be flooded. From 2009 to 2011, we concluded a population survey of the area (N = 2,008; representing circa 80% of community residents) that estimated fish consumption and mercury exposure of riverine populations with different degrees of lifestyle related to fish consumption. Fish samples from the Madeira river (N = 1,615) and 110 species were analyzed for Hg. Hair-Hg was significantly lower (p < 0.001) in less isolated communities near to the capital of Porto Velho (median 2.32 ppm) than in subsistence communities in the Cuniã Lake, 180 km from Porto Velho city (median 6.3 ppm). Fish Hg concentrations ranged from 0.01 to 6.06 µg/g, depending on fish size and feeding behavior. Currently available fish in the Madeira river show a wide variability in Hg concentrations. Despite cultural similarities, riparians showed hair-Hg distribution patterns that reflect changes in fish-eating habits driven by subsistence characteristics.

  16. Potential effects of hydroelectric dam development in the Mekong River basin on the migration of Siamese mud carp (Henicorhynchus siamensis and H. lobatus) elucidated by otolith microchemistry.

    Science.gov (United States)

    Fukushima, Michio; Jutagate, Tuantong; Grudpan, Chaiwut; Phomikong, Pisit; Nohara, Seiichi

    2014-01-01

    The migration of Siamese mud carp (Henicorhynchus siamensis and H. lobatus), two of the most economically important fish species in the Mekong River, was studied using an otolith microchemistry technique. Fish and river water samples were collected in seven regions throughout the whole basin in Thailand, Laos and Cambodia over a 4 year study period. There was coherence between the elements in the ambient water and on the surface of the otoliths, with strontium (Sr) and barium (Ba) showing the strongest correlation. The partition coefficients were 0.409-0.496 for Sr and 0.055 for Ba. Otolith Sr-Ba profiles indicated extensive synchronized migrations with similar natal origins among individuals within the same region. H. siamensis movement has been severely suppressed in a tributary system where a series of irrigation dams has blocked their migration. H. lobatus collected both below and above the Khone Falls in the mainstream Mekong exhibited statistically different otolith surface elemental signatures but similar core elemental signatures. This result suggests a population originating from a single natal origin but bypassing the waterfalls through a passable side channel where a major hydroelectric dam is planned. The potential effects of damming in the Mekong River are discussed.

  17. Potential effects of hydroelectric dam development in the Mekong River basin on the migration of Siamese mud carp (Henicorhynchus siamensis and H. lobatus elucidated by otolith microchemistry.

    Directory of Open Access Journals (Sweden)

    Michio Fukushima

    Full Text Available The migration of Siamese mud carp (Henicorhynchus siamensis and H. lobatus, two of the most economically important fish species in the Mekong River, was studied using an otolith microchemistry technique. Fish and river water samples were collected in seven regions throughout the whole basin in Thailand, Laos and Cambodia over a 4 year study period. There was coherence between the elements in the ambient water and on the surface of the otoliths, with strontium (Sr and barium (Ba showing the strongest correlation. The partition coefficients were 0.409-0.496 for Sr and 0.055 for Ba. Otolith Sr-Ba profiles indicated extensive synchronized migrations with similar natal origins among individuals within the same region. H. siamensis movement has been severely suppressed in a tributary system where a series of irrigation dams has blocked their migration. H. lobatus collected both below and above the Khone Falls in the mainstream Mekong exhibited statistically different otolith surface elemental signatures but similar core elemental signatures. This result suggests a population originating from a single natal origin but bypassing the waterfalls through a passable side channel where a major hydroelectric dam is planned. The potential effects of damming in the Mekong River are discussed.

  18. Proposed Dunvegan hydroelectric project

    International Nuclear Information System (INIS)

    Houston, M.

    2001-01-01

    A new hydroelectric project is being proposed on the Peace River in the vicinity of Dunvegan, Alberta, by Glacier Power. The proposal calls for a low head, run-of-the-river hydroelectric power plant which would comprise a powerhouse containing 40 Kaplan turbines, a weir section, two fishways and a boat lock. The capacity of the generating plant would be 80 MW. As per established guidelines, the review process was initiated in July 1999 and is ongoing. Stakeholders, government agencies, both at the federal and provincial levels, are involved in the review process. The potential effects on the ice regime, fish passage and fish mortality and bank stability are the issues that have warranted the most attention to date. Scheduled to begin on October 2, 2001, a public hearing on the project has been arranged by the Alberta Energy and Utilities Board. The objective sought by Glacier Power is to have the project certified as being a green-power plant. Green power is defined as power produced from renewable sources with low environmental impact. The production of power with minimal environmental impacts is being encouraged in Alberta by Glacier Power, which sells power for a premium. 6 refs., 4 figs

  19. Effects of Hydroelectric Dam Operations on the Restoration Potential of Snake River Fall Chinook Salmon (Oncorhynchus tshawytscha) Spawning Habitat Final Report, October 2005 - September 2007.

    Energy Technology Data Exchange (ETDEWEB)

    Hanrahan, Timothy P.; Richmond, Marshall C.; Arntzen, Evan V. [Pacific Northwest National Laboratory

    2007-11-13

    This report describes research conducted by the Pacific Northwest National Laboratory for the Bonneville Power Administration (BPA) as part of the Fish and Wildlife Program directed by the Northwest Power and Conservation Council. The study evaluated the restoration potential of Snake River fall Chinook salmon spawning habitat within the impounded lower Snake River. The objective of the research was to determine if hydroelectric dam operations could be modified, within existing system constraints (e.g., minimum to normal pool levels; without partial removal of a dam structure), to increase the amount of available fall Chinook salmon spawning habitat in the lower Snake River. Empirical and modeled physical habitat data were used to compare potential fall Chinook salmon spawning habitat in the Snake River, under current and modified dam operations, with the analogous physical characteristics of an existing fall Chinook salmon spawning area in the Columbia River. The two Snake River study areas included the Ice Harbor Dam tailrace downstream to the Highway 12 bridge and the Lower Granite Dam tailrace downstream approximately 12 river kilometers. These areas represent tailwater habitat (i.e., riverine segments extending from a dam downstream to the backwater influence from the next dam downstream). We used a reference site, indicative of current fall Chinook salmon spawning areas in tailwater habitat, against which to compare the physical characteristics of each study site. The reference site for tailwater habitats was the section extending downstream from the Wanapum Dam tailrace on the Columbia River. Fall Chinook salmon spawning habitat use data, including water depth, velocity, substrate size and channelbed slope, from the Wanapum reference area were used to define spawning habitat suitability based on these variables. Fall Chinook salmon spawning habitat suitability of the Snake River study areas was estimated by applying the Wanapum reference reach habitat

  20. Non-native fishes of the central Indian River Lagoon

    Science.gov (United States)

    Schofield, Pamela J.; Loftus, William F.; Reaver, Kristen M.

    2018-01-01

    We provide a comprehensive review of the status of non-native fishes in the central Indian River Lagoon (from Cape Canaveral to Grant-Valkaria, east of I-95) through literature review and field surveys. Historical records exist for 17 taxa (15 species, one hybrid, one species complex). We found historical records for one additional species, and collected one species in our field survey that had never been recorded in the region before (and which we eradicated). Thus, we evaluate 19 total taxa herein. Of these, we documented range expansion of four salt-tolerant cichlid species, extirpation of six species that were previously recorded from the area and eradication of three species. There was no noticeable change in geographic range for one widespread species and the records for one species are doubtful and may be erroneous. Currently, there is not enough information to evaluate geographic ranges for four species although at least one of those is established.

  1. Hoopa Valley Small Scale Hydroelectric Feasibility Project

    Energy Technology Data Exchange (ETDEWEB)

    Curtis Miller

    2009-03-22

    This study considered assessing the feasibility of developing small scale hydro-electric power from seven major tributaries within the Hoopa Valley Indian Reservation of Northern California (http://www.hoopa-nsn.gov/). This study pursued the assessment of seven major tributaries of the Reservation that flow into the Trinity River. The feasibility of hydropower on the Hoopa Valley Indian Reservation has real potential for development and many alternative options for project locations, designs, operations and financing. In order to realize this opportunity further will require at least 2-3 years of intense data collection focusing on stream flow measurements at multiple locations in order to quantify real power potential. This also includes on the ground stream gradient surveys, road access planning and grid connectivity to PG&E for sale of electricity. Imperative to this effort is the need for negotiations between the Hoopa Tribal Council and PG&E to take place in order to finalize the power rate the Tribe will receive through any wholesale agreement that utilizes the alternative energy generated on the Reservation.

  2. Hindrances to upstream migration of atlantic salmon (Salmo salar) in a northern Swedish river caused by a hydroelectric power-station

    International Nuclear Information System (INIS)

    Rivinoja, P.; Lundqvist, H.

    2001-01-01

    Many Baltic salmon rivers have lost their natural juvenile production due to human activities blocking or reducing access to their spawning grounds, e.g. damming, power generation, partial hinders, etc.. One such hindrance is a hydroelectric complex located in the lower reaches of River Umeaelven in northern Sweden. Water from the forbay created by the dam Norrfors is directed to the Stornorrfors power-station. At times, 100 per cent of the river is directed to the power-station. Water from the power-station then flows via a tunnel and outlet channel to the river. From the point of the tunnel's discharge into the river, the old river bed acts as a bypass channel directing migrating adult fish to a fish ladder located at the base of the dam. In this study, the effect that an additional turbine, that was installed at the power-station in 1986, had on fish passage run-time was examined. Changes in run-time were compared for two periods 1974-1985 and 1986-1995. In 1997, 55 wild and 25 hatchery salmon were captured in the Umeaelven estuary, radio tagged with uniquely coded tags, and tracked upstream. Both manual and automatic loggers were used to locate fish daily. The main findings show that only 26 per cent of the wild salmon and none of the hatchery salmon found the fish ladder. It is suggested that the salmon followed the main water discharge from the power-station outlet and are thus directed away from the entrance to the bypass channel leading to the fish ladder. Salmon respond by moving upstream or downstream depending on the current flow regimes. The bypass channel consists of partial hinders that may explain why it takes on average 52 days for the salmon to migrate 32 km from the estuary to the fish ladder. Adding a fourth turbine at the power-station did not appear to have changed the timing of the migration or the seasonal distribution of the migrating wild salmon through the fish ladder. There was no significant effect of the fourth turbine on the duration

  3. Evaluation of melioration area damage on the river Danube caused by the hydroelectric power plant 'Djerdap 1' backwater.

    Science.gov (United States)

    Pajic, P; Andjelic, L; Urosevic, U; Polomcic, D

    2014-01-01

    Construction of the hydroelectric power plant (HPP) 'Djerdap 1' formed a backwater effect on the Danube and its tributaries, which had an inevitable influence on groundwater level, causing it to rise and thus creating additional threats to all melioration areas on more than 300 km of the Danube riversides, as well as on the riversides of its tributaries: the Sava (100 km) and the Tisa (60 km). In this paper, the HPP 'Djerdap 1' backwater effect on some characteristic melioration areas (34 in all) has been analyzed. In most of these areas intensive agricultural activity has always been present. An assessment of agricultural production damage was carried out by complex hydrodynamic calculations (60 calculation profiles) for different backwater regimes, with the aim to precisely quantify the HPP 'Djerdap 1' backwater effect on groundwater piezometric levels. Combining them with complex agroeconomic analyses, the aim is to quantify agricultural production damage and to consider the perspective of melioration area users. This method, which combines two different, but compatible, aspects of the melioration area threat assessment (hydrodynamic and agroeconomic), may present a quality base for further agricultural production threat assessment on all melioration areas on the Danube riversides, with the final aim to consider the economic effects and the importance of its further protection.

  4. The first cut-off wall in the Indian Himalayas for the dam of the Dhauliganga hydroelectric project

    Energy Technology Data Exchange (ETDEWEB)

    Brunner, W.G. [Bauer Maschinen GmbH, Berlin (Germany)

    2006-07-01

    This paper provided details a Bauer cutter used to build a cut-off wall for the Dhaulinganga power plant project in the Himalayan mountains. The dam for the project was built as a 56 m high concrete-faced rockfill dam with a length of 270 m at the crown. A cut-off wall was constructed on the upstream side of the dam extending down from the dam's plinth to the bedrock level. A Bauer cutter was used to key the cut-off wall straight into the bedrock, which omitted the need for a grout curtain. The cut-off wall is 1 m thick and 70 m deep, with a total area of 8000 m{sup 2}. The wall was constructed as a series of primary and secondary panels. Excavation of the panels was carried out in single bites by the Bauer DHG hydraulic diaphragm wall grabs, supported a box chisel, cross chisel and a Bauer BC 40 rock cutter. Trench stability was provided by bentonite slurry. The closing forces were activated by a cylinder which was installed vertically inside the base body. The Bauer cutter continuously removed soil and rock from the bottom of the trench for mixing with the bentonite slurry. The slurry was then pumped through a ring main of hose pipes to a desanding plant where it was cleaned and returned to the trench. Advantages offered by using the cutter included a consistently high output, an extremely high degree of verticality, watertight joints, and the ability to cut through hard boulders. Use of the cutter at the Dhaulinganga site showed that the project could not be carried out successfully without the use of the cutter, which was used whenever grab and chisel methods were unable to achieve satisfactory rates of penetration. Deployment of the cutter was essential to key the cut-off wall into the underlying bedrock. It was concluded that the Dhualinganga project will provide a model for future power generation projects in the Indian Himalayas. 11 figs.

  5. 40 CFR 52.142 - Federal Implementation Plan for Tri-Cities landfill, Salt River Pima-Maricopa Indian Community.

    Science.gov (United States)

    2010-07-01

    ...-Cities landfill, Salt River Pima-Maricopa Indian Community. 52.142 Section 52.142 Protection of... IMPLEMENTATION PLANS Arizona § 52.142 Federal Implementation Plan for Tri-Cities landfill, Salt River Pima... the Tri-Cities landfill located on the Salt River Pima-Maricopa Indian Community near Phoenix, Arizona...

  6. Effects of Artificial Flooding for Hydroelectric Development on the Population of Mansonia humeralis (Diptera: Culicidae) in the Paraná River, São Paulo, Brazil.

    Science.gov (United States)

    de Paula, Marcia Bicudo; Gomes, Almério de Castro; Natal, Delsio; Duarte, Ana Maria Ribeiro de Castro; Mucci, Luís Filipe

    2012-01-01

    The closure of two phases of the dam at the Porto Primavera Hydroelectric Plant on the Paraná River flooded a flawed system located in the Municipality of Presidente Epitácio, São Paulo state, favoring the proliferation of aquatic weeds. This study aimed to observe the population of Mansonia humeralis in the area, monitoring the richness, diversity, and dominance of this species both before and during different phases of reservoir flooding as well as evaluate its possible consequences concerning human and animal contact. Adult mosquitoes were collected monthly in the following periods: at the original level, after the first flood, and after the maximum level had been reached between 1997 and 2002. Collection methods used were an aspirator, a Shannon trap, and the Human Attractive Technique. A total of 30,723 mosquitoes were collected, Ma. humeralis accounting for 3.1% in the preflood phase, 59.6% in the intermediate, and 53.8% at maximum level. This species is relevant to public health, since the prospect of continued contact between Ma. humeralis and the human population enhances the dam's importance in the production of nuisance mosquitoes, possibly facilitating the transmission of arboviruses. Local authorities should continue to monitor culicid activity through sustainable entomological surveillance.

  7. Feasibility assessment, Lowell Hydroelectric Project

    Energy Technology Data Exchange (ETDEWEB)

    1979-04-01

    The results are presented of a feasibility analysis for hydroelectric generating facilities on the Merrimack River at Lowell, Massachusetts. The projected facility would utilize the existing Pawtucket Dam and a portion of the existing Northern Canal. The project was examined for economic, engineering, and environmental viability, and the results are favorable. The owners intend to proceed to the next step of negotiating a firm power purchase agreement.

  8. 75 FR 19989 - Final Environmental Impact Statement for Drought Management Planning at the Kerr Hydroelectric...

    Science.gov (United States)

    2010-04-16

    ... Drought Management Planning at the Kerr Hydroelectric Project, Flathead Lake, MT AGENCY: Bureau of Indian... Impact Statement (FEIS) for Drought Management Planning at the Kerr Hydroelectric Project, Flathead Lake... drought management planning at the Kerr Hydroelectric Project no sooner than 30 days following the...

  9. Comparative studies on trace metal geochemistry in Indian and Chinese rivers

    Digital Repository Service at National Institute of Oceanography (India)

    Alagarsamy, R.; Zhang, J.

    concentration of Indian rivers (~300–1000 µg g–l) is higher than that of Chinese rivers (~150–300 µg g–l) and the global average (~170–350 µg g–l). Molar ratios of alkaline and alkaline earth metals to Fe and Al (i.e. segregation factor, SF) were calculated...

  10. RIVER INTER-LINKING (RIL) PROJECT: A QUESTION ON INDIAN FEDERALISM.

    OpenAIRE

    Shazia Waheed; Pradip Kumar Jha.

    2017-01-01

    The Supreme Court of India, in 2002 directed the central government to link major Indian rivers within 10 years. In December 2002, the government appointed a task force on interlinking of 37 rivers and the dead line was extended by 2016. The RIL project not only raises national issue but also give way to international conflict in South Asia over sharing of river waters. The paper examines the impact of the RIL project on the paradigms and working of Indian federalism. It is based on triangula...

  11. Characterization of the Water Quality Status on a Stretch of River Lérez around a Small Hydroelectric Power Station

    Directory of Open Access Journals (Sweden)

    Enrique Valero

    2012-10-01

    Full Text Available The renewable energy emerged as a solution to the environmental problems caused by the conventional sources of energy. Small hydropower (SHP is claimed to cause negligible effects on the ecosystem, although some environmental values are threatened and maintenance of an adequate water quality should be ensured. This work provides a characterization of the water quality status in a river stretch around a SHP plant on river Lérez, northwest Spain, for four years after its construction. The ecological and chemical status of the water as well as the ecological quality of the riparian habitat, were used as measures of quality. Data were compared with the water quality requirements. The variations in the quality parameters were analyzed over time and over the river sections with respect to the SHP plant elements. Two years after construction, the temperature and dissolved oxygen values achieved conditions for salmonid water and close to the reference condition, while pH values were low. The Iberian Biological Monitoring Working Party (IBMWP index showed a positive trend from two years after the construction and stabilized at “unpolluted or not considerably altered water”. Quality parameters did not present significant differences between sampling points. The SHP plant construction momentarily altered the quality characteristics of the water.

  12. Reservoir stratification affects methylmercury levels in river water, plankton, and fish downstream from Balbina hydroelectric dam, Amazonas, Brazil.

    Science.gov (United States)

    Kasper, Daniele; Forsberg, Bruce R; Amaral, João H F; Leitão, Rafael P; Py-Daniel, Sarah S; Bastos, Wanderley R; Malm, Olaf

    2014-01-21

    The river downstream from a dam can be more contaminated by mercury than the reservoir itself. However, it is not clear how far the contamination occurs downstream. We investigated the seasonal variation of methylmercury levels in the Balbina reservoir and how they correlated with the levels encountered downstream from the dam. Water, plankton, and fishes were collected upstream and at sites between 0.5 and 250 km downstream from the dam during four expeditions in 2011 and 2012. Variations in thermal stratification of the reservoir influenced the methylmercury levels in the reservoir and in the river downstream. Uniform depth distributions of methylmercury and oxygen encountered in the poorly stratified reservoir during the rainy season collections coincided with uniformly low methylmercury levels along the river downstream from the dam. During dry season collections, the reservoir was strongly stratified, and anoxic hypolimnion water with high methylmercury levels was exported downstream. Methylmercury levels declined gradually to 200 km downstream. In general, the methylmercury levels in plankton and fishes downstream from the dam were higher than those upstream. Higher methylmercury levels observed 200-250 km downstream from the dam during flooding season campaigns may reflect the greater inflow from tributaries and flooding of natural wetlands that occurred at this time.

  13. Impact of hydroelectric installations on the morphology's short-circuited reaches of the Durance and the Verdon Rivers

    International Nuclear Information System (INIS)

    Lefort, Philippe; Chapuis, Margot

    2012-01-01

    Attenuation of flood peaks by the reservoirs of Serre Poncon and along the Verdon River, and diversions of the Durance River's flow in the industrial canal significantly modify the flow regime in the short-circuited beds. Upstream inflow of gravel materials is decreased, bed-load transport is significantly reduced, channels' mobility is atrophied, or becomes even nonexistent. The vegetation impact leads then to an obstruction of the braided channel, the rare occurrence of high flows is not able to prevent. Clearing the bed has been and stays an efficient response to the vegetation encroachment, and a necessary condition to maintain the discharge capacity during high flow, the originality and the diversity of the natural landforms. The loss of mobility is also due to bed-load transport's interruption through dams, but even more to the past gravel extractions and to weirs that sustain low flow: bed-load transport restoration through dams, sedimentary recharge of the bed with gravels coming from lateral terraces and increasing of high flows intensity will lead to a minimal required mobility. (authors)

  14. [Limnetic zooplankton run-off a high-head dam and their fate in a river with high current velocity (case of the Krasnoiarsk hydroelectric power station on the Yenisei river].

    Science.gov (United States)

    Dubovskaia, O P; Gladyshev, M I; Makhutova, O N

    2004-01-01

    The vertical distribution of net zooplankton in head-water of Krasnoyarsk hydroelectric power station and its horizontal distribution in the tail-water were studied during two years in winter and summer seasons. In order to distinguish living and dead individuals the special staining was used. It was revealed that on average 77% of living plankton pass through high-head dam with deep water scoop to the tailwater. While passing through dam aggregates some individuals of the reservoir plankton are traumatized and die, that results in some increase of portion of dead individuals in the tail water near dam (from 3 to 6%). Alive zooplankton passed through the dam aggregates is eliminated under the Upper Yenisei highly turbulent conditions. There is approximately 10% of it in 32 km from the dam if compare with biomass in 20-40 m layer of reservoir, the portion of dead increases to 11%. The biomass of zooplankton suspended in the water column of the tail-water sometimes increases (till > 1 g/m3) due to large Copepoda Heteroscope borealis, which inhabits near-bottom and near-shore river zones and can be found in the central part of the river during reproductive period. Limnetic zooplankton from the reservoir cannot be considered as important food for planktivores in the tail-water.

  15. 78 FR 35630 - Martin Dam Hydroelectric Project; Notice of Availability of the Draft Environmental Impact...

    Science.gov (United States)

    2013-06-13

    ... Hydroelectric Project; Notice of Availability of the Draft Environmental Impact Statement for the Martin Dam Hydroelectric Project and Intention To Hold Public Meetings In accordance with the National Environmental Policy... the Martin Dam Hydroelectric Project (FERC No. 349), located on the Tallapoosa River in Tallapoosa...

  16. 76 FR 62802 - Fairlawn Hydroelectric Company, LLC; Notice of Availability of Environmental Assessment

    Science.gov (United States)

    2011-10-11

    ... Hydroelectric Company, LLC; Notice of Availability of Environmental Assessment In accordance with the National...,000-kilowatt (kW) Jennings Randolph Hydroelectric Project located on the North Branch Potomac River in..., Washington, DC 20426. Please affix ``Jennings Randolph Hydroelectric Project No. 12715-003'' to all comments...

  17. 76 FR 72196 - CRD Hydroelectric LLC; Western Minnesota Municipal Power Agency; Notice of Application for...

    Science.gov (United States)

    2011-11-22

    ... Hydroelectric LLC; Western Minnesota Municipal Power Agency; Notice of Application for Transfer of License, and Soliciting Comments and Motions To Intervene On October 14, 2011, CRD Hydroelectric LLC (transferor) and... Red Rock Hydroelectric Project, No. 12576, located on the Des Monies River in Marion County, Iowa...

  18. The little hydro-electricity: the boosting?

    International Nuclear Information System (INIS)

    Brunier, S.; Najac, C.; Roussel, A.M.; Claustre, R; Baril, D.; Marty, D.; Lefevre, P.; Arnould, M.

    2007-01-01

    The hydraulic energy could be easily developed in France to reach the objectives of the european directive on the renewable energies. This development can be assured by the construction of power plants perfectly integrated in their environment and respecting the rivers and assured also by the increase of the capacities of existing power plants as it is allowing by the new regulations. This document presents the place and the capacity of the hydro-electricity in France, the implementing of a green electricity, the existing regulation, the river biological continuation, the ecosystems and the little hydro-electricity and the example of the hydro-electric power plant of Scey-sur-Saone. (A.L.B.)

  19. Hydroelectric modelling of the Paraiba do Sul and Jequitinhonha rivers sub-basins by using the VALORAGUA computer program; Modelagem hidreletrica das sub bacias dos rios Paraiba do Sul e Jequitinhonha utilizando o programa VALORAGUA

    Energy Technology Data Exchange (ETDEWEB)

    Ferreira, Vinicius Verna Magalhaes; Aronne, Ivan Dionysio [Centro de Desenvolvimento da Tecnologia Nuclear (CDTN), Belo Horizonte, MG (Brazil)]. E-mails: vvmf@urano.cdtn.br; aroneid@urano.cdtn.br; Martinez, Carlos Barreira; Versiani, Bruno Rabelo [Minas Gerais Univ., Belo Horizonte, MG (Brazil). Escola de Engenharia. Dept. de Engenharia Hidraulica e Recursos Hidricos]. E-mail: martinez@cce.ufmg.br; versiani@ehr.ufmg.br

    2002-07-01

    This work presents a modelling of 50 hydroelectric power plants in the East Atlantica hydro graphic basin, operating, under construction or as basic projects. The simulations are performed by using the VALORAGUA computer code, developed by the EDP - Eletricidade de Portugal. The studies concentrate mostly on the sub basins of the Jequitinhonha and Paraiba do Sul rivers. The study includes the thermal power plants existent on the same geographical region. Some obtained results such as capacity factors and energy generation values are analysed. Some considerations are made on questions referring to the Brazilian energetic problems.

  20. Hydroelectricity and sustainable development

    International Nuclear Information System (INIS)

    Dubeau, D.

    1995-01-01

    From 1975 to 1992, hydroelectricity helped reduce greenhouse gas emissions in Quebec by 20%. For Hydro-Quebec, energy conservation and hydroelectric development are basic complementary tools for sustainable development. Recent studies show that developing only 50% of economically exploitable hydroelectric potential (30% of the gross theoretical potential) of different regions worldwide would considerably reduce greenhouse gas and SO 2 emissions. However, hydroelectric systems produce environmental and social impacts locally that require mitigative measures. To fulfill its mandate in a sustainable development context, Hydro-Quebec has adopted methods such as integrated resource planning, the assessment of externalities, multi criteria decision tools and public participations

  1. 77 FR 15094 - Sawatt Hydroelectric, LLC; Notice of Application for Amendment of Exemption and Soliciting...

    Science.gov (United States)

    2012-03-14

    ... Project: Mechanicsville Hydroelectric Project. f. Location: The project is located on French River, near... and contact information at the end of comments. The Commission strongly encourages electronic filings...

  2. Canton hydroelectric project: feasibility study. Final report, appendices

    Energy Technology Data Exchange (ETDEWEB)

    1979-05-01

    These appendices contain legal, environmental, regulatory, technical and economic information used in evaluating the feasibility of redeveloping the hydroelectric power generating facilities at the Upper and Lower Dams of the Farmington River at Collinsville, CT. (LCL)

  3. Improvement of hydroelectric power generation using pumped ...

    African Journals Online (AJOL)

    By principle, hydroelectric power generation relies on the law of conservation of energy where kinetic energy that resulted from the movement of the mass of water from the river is translated into electr icity, the quantum of which depends on systemic variables viz: plant efficiency, volumetric water flow through the turbine and ...

  4. Financial evaluation of the integration of satellite technology for snow cover measurements at a hydroelectric plant. (Utilization of Radarsat I in the La Grande river basin, Quebec)

    International Nuclear Information System (INIS)

    Martin, D.; Bernier, M.; Sasseville, J.L.; Charbonneau, R.

    1999-01-01

    The emergence, on the markets, of new technologies evokes, for the potential users, a lot of questions concerning the implementation and operation costs associated with these technologies. Nevertheless, for a lot of users, costs should be considered with the benefits these technologies are able to generate. The benefit-cost analysis is a useful tool for a financial evaluation of the transferability of the technology. This method has been selected to evaluate the eventual implementation of remote sensing technologies for snow cover measurements in the La Grande river basin (Quebec, Canada). Indeed, a better assessment of the snow water equivalent leads to a better forecasting of the water inputs due to the snowmelt. Thus, the improvement of the snow cover monitoring has direct impact on hydroelectric reservoir management. The benefit-cost analysis was used to compare three acquisition modes of the satellite Radarsat 1 (ScanSAR, Wide and Standard). The costs considered for this project are: R and D costs and operations costs (the purchase of images and costs of ground truth measurements). We evaluated the raw benefits on the basis of reducing the standard deviation of predicted inflows. The results show that the ScanSAR mode is the primary remote sensing tool for the monitoring of the snow cover, on an operational basis. With this acquisition mode, the benefit-cost ratios range between 2.3:1 and 3.9:1, using a conservative 4% reduction of the standard deviation. Even if the reduction is only 3%, ScanSAR remains profitable. Due to the large number of images needed to cover all the territory, the Standard and Wide modes are penalized by the purchase and the processing costs of the data and with delays associated to the processing. Nevertheless, with these two modes, it could be possible to work with a partial coverage of the watershed, 75% being covered in 4 days in Wide mod. The estimated B/C ratios (1.5:1 and 2:1) confirm the advantages of this alternative

  5. The Innavik hydroelectric project

    Energy Technology Data Exchange (ETDEWEB)

    St-Pierre, S.; McNeil, E.; Gacek, J. [RSW Inc., Montreal, PQ (Canada); Atagotaaluk, E. [Pituvik Landholding Corp., Nunavik, PQ (Canada); Henderson, C. [Lumos Energy, Ottawa, ON (Canada)

    2009-07-01

    The village of Inukjuak in northern Quebec is not connected to the main electrical grid. This remote village is one of 14 Inuit communities in the Nunavik administrative region where electricity is generated by diesel thermal power plants under the direction of Hydro-Quebec Distribution's Isolated Grid subdivision. The heating of water and buildings is supplied by heavy fuel-oil. A compensation program for the price of fuel-oil is applied in the community. This presentation discussed the need for developing renewable energy sources in order to respond to the energy demands of isolated grids. The community of Inukjuak plans on developing the water resources of the Inukjuak River in order to produce hydroelectricity and reduce the use of diesel fuel. Several possible development sites were identified. The project will contribute to a reduction in energy costs while reducing greenhouse gas emissions. Revenues generated from the power plant will help the village in their economic development by enabling the completion of various community projects. The sustainable development approach taken for the project was discussed and the project's main technical, environmental and social issues were identified. The project is expected to reduce the production of an estimated 8 tons of carbon dioxide emissions by 2011 and nearly 15 tons after 10 years of operation.

  6. 76 FR 77549 - Colorado River Indian Tribes-Amendment to Health & Safety Code, Article 2. Liquor

    Science.gov (United States)

    2011-12-13

    ... Health & Safety Code, Article 2. Liquor AGENCY: Bureau of Indian Affairs, Interior. ACTION: Notice. SUMMARY: This notice publishes the amendment to the Colorado River Tribal Health and Safety Code, Article... Code, Article 2, Liquor by Ordinance No. 10-03 on December 13, 2010. This notice is published in...

  7. Hydroelectric Power Plants Dobsina

    International Nuclear Information System (INIS)

    Majercak, V.; Srenkelova, Z.; Kristak, J.G.

    1997-01-01

    In this brochure the Hydroelectric Power Plants Dobsina, (VED), subsidiary of the utility Slovenske Elektrarne, a.s. (Slovak Electric, plc. Bratislava) are presented. VED is mainly aimed at generating peak-load electrical energy and maintenance of operational equipment. Reaching its goals, company is first of all focused on reliability of production, economy and effectiveness, keeping principles of work safety and industry safety standards and also ecology. VED operates eight hydroelectric power plants, from which PVE Ruzin I and PVE Dobsina I are pump storage ones and they are controlled directly by the Slovak Energy Dispatch Centre located in Zilina thought the system LS 3200. Those power plants participate in secondary regulation of electrical network of Slovakia. They are used to compensate balance in reference to foreign electrical networks and they are put into operation independently from VED. Activity of the branch is focused mainly on support of fulfilment of such an important aim as electric network regulation. Beginnings of the subsidiary Hydroelectric Power Plants Dobsina are related to the year of 1948. After commissioning of the pump storage Hydroelectric Power Plants Dobsina in 1953, the plant started to carry out its mission. Since that time the subsidiary has been enlarged by other seven power plants, through which it is fulfilling its missions nowadays. The characteristics of these hydroelectric power plants (The pump-storage power plant Dobsina, Small hydroelectric power plant Dobsina II, Small hydroelectric power plant Rakovec, Small hydroelectric power plant Svedlar, Hydroelectric power plant Domasa, The pump-storage power plant Ruzin, and Small hydroelectric power plant Krompachy) are described in detail. Employees welfare and public relations are presented

  8. Assessing fish predation on migrating juvenile steelhead and a retrospective comparison to steelhead survival through the Priest Rapids Hydroelectric Project, Columbia River, Washington, 2009-11

    Science.gov (United States)

    Hardiman, Jill M.; Counihan, Timothy D.; Burgess, Dave S.; Simmons, Katrina E.; Holmberg, Glen S.; Rogala, Josh; Polacek, Rochelle

    2012-01-01

    The U.S. Geological Survey (USGS) and the Washington Department of Fish and Wildlife (WDFW) have been working with the Public Utility District No. 2 of Grant County, Washington (Grant PUD), to increase their understanding of predator-prey interactions in the Priest Rapids Hydroelectric Project (PRP), Columbia River, Washington. For this study, the PRP is defined as the area approximately 6 kilometers upstream of Wanapum Dam to the Priest Rapids Dam tailrace, 397.1 miles from the mouth of the Columbia River. Past year’s low survival numbers of juvenile steelhead (Oncorhynchus mykiss) through Wanapum and Priest Rapids Dams has prompted Grant PUD, on behalf of the Priest Rapids Coordinating Committee, to focus research efforts on steelhead migration and potential causal mechanisms for low survival. Steelhead passage survival in 2009 was estimated at 0.944 through the Wanapum Development (dam and reservoir) and 0.881 through the Priest Rapids Development and for 2010, steelhead survival was 0.855 for Wanapum Development and 0.904 for Priest Rapids Development. The USGS and WDFW implemented field collection efforts in 2011 for northern pikeminnow (Ptychocheilus oregonensis), smallmouth bass (Micropterus dolomieu), and walleye (Sander vitreus, formerly Stizostedion vitreum) and their diets in the PRP. For predator indexing, we collected 948 northern pikeminnow, 237 smallmouth bass, 18 walleye, and two largemouth bass (Micropterus salmoides). The intent of this study was to provide standardized predation indices within individual reaches of the PRP to discern spatial variability in predation patterns. Furthermore, the results of the 2011 study were compared to results of a concurrent steelhead survival study. Our results do not indicate excessively high predation of Oncorhynchus spp. occurring by northern pikeminnow or smallmouth bass in any particular reach throughout the study area. Although we found Oncorhynchus spp. in the predator diets, the relative

  9. Dataset of long-term monitoring of ground-dwelling ants (Hymenoptera: Formicidae) in the influence areas of a hydroelectric power plant on the Madeira River in the Amazon Basin.

    Science.gov (United States)

    Fernandes, Itanna O; de Souza, Jorge L P

    2018-01-01

    Biodiversity loss is accelerating rapidly in response to increasing human influence on the Earth's natural ecosystems. One way to overcome this problem is by focusing on places of human interest and monitoring the changes and impacts on the biodiversity. This study was conducted at six sites within the influence area of the Santo Antônio Hydroelectric Power Plant in the margins of the Madeira River in Rondônia State. The sites cover a latitudinal gradient of approximately 100 km in the Brazilian Amazon Basin. The sampling design included six sampling modules with six plots (transects) each, totaling 30 sampling plots. The transects were distributed with 0 km, 0.5 km, 1 km, 2 km, 3 km and 4 km, measured perpendicularly from the river margin towards the interior of the forest. For sampling the ground-dwelling ants, the study used the ALL (ants of the leaf litter) protocol, which is standardized globally in the inventories of ant fauna. For the purpose of impact indicators, the first two campaigns (September 2011 to November 2011) were carried out in the pre-filling period, while campaigns 3 to 10 (February 2012 to November 2014) were carried out during and after the filling of the hydroelectric reservoir. A total of 253 events with a total of 9,165 occurrences were accounted during the monitoring. The ants were distributed in 10 subfamilies, 68 genera and 324 species/morphospecies. The impact on ant biodiversity during the periods before and after filling was measured by ecological indicators and by the presence and absence of some species/morphospecies. This is the first study, as far as we know, including taxonomic and ecological treatment to monitor the impact of a hydroelectric power plant on ant fauna. Until recently, most studies conducted on hydroelectric plants, located in the Amazon Basin, were carried out after the implementation of dams in order to assess their impacts on the environment and biodiversity (Benchimol and Peres 2015, Latrubesse et al. 2017

  10. Fish and hydroelectricity

    International Nuclear Information System (INIS)

    Zorpette, G.

    1990-01-01

    This paper reports on the problems that hydroelectric plants have regarding fish populations. The utilities that operate these plants are finding that accommodating migrating fish presents unique engineering challenges, not the least of which involves designing and building systems to protect fish species whose migratory behavior remains something of a mystery. Where such systems cannot be built, the status of hydroelectric dams may be in doubt, as is now the case with several dams in the United States. A further twist in some regions in the possibility that certain migratory fish will be declared threatened or endangered-a development that could wreak havoc on the hydroelectric energy supply in those regions

  11. Small hydroelectric engineering practice

    CERN Document Server

    Leyland, Bryan

    2014-01-01

    Small Hydroelectric Engineering Practice is a comprehensive reference book covering all aspects of identifying, building, and operating hydroelectric schemes between 500 kW and 50 MW. In this range of outputs there are many options for all aspects of the scheme and it is very important that the best options are chosen.As small hydroelectric schemes are usually built against a limited budget it is extremely important that the concept design is optimum and every component is designed to maximise the benefi t and minimise the cost. As operating costs are often a high proportion of the income it i

  12. Export of dissolved inorganic nutrients to the northern Indian Ocean from the Indian monsoonal rivers during discharge period

    Digital Repository Service at National Institute of Oceanography (India)

    Krishna, M.S.; Prasad, M.H.K.; Rao, D.B.; Viswanadham, R.; Sarma, V.V.S.S.; Reddy, N.P.C.

    salinity stratification (Varkey et al., 1996) that suppresses vertical mixing resulting in low biological production (Prasannakumar et al., 2002). Major and medium-sized monsoonal rivers draining into the Bay of Bengal and the Arabian Sea were shown...-containing synthetic fertilizers such as di-ammonium phosphate (DAP) in the SW region (mean 17.1 kg hectare-1) than the other regions of the Indian 8    subcontinent (22.1 kg hectare-1) suggest a strong influence of P leaching from soils in addition...

  13. Battle looms over hydroelectric dam relicensing

    International Nuclear Information System (INIS)

    Simpson, J.

    1993-01-01

    Environmental groups, buoyed by support from influential lawmakers, are vowing to change the Federal Energy Regulatory Commission's (FERC's) hydroelectric relicensing procedures. For too long, the groups say, the hydroelectric industry has benefitted from a cozy relationship with the FERC, which has emphasized economic over environmental considerations. The success or failure of the environmentalists agenda will likely prove critical to the hydroelectric industry. With 237 hydroelectric licenses up for renewal this year - the most ever considered by the FERC in one year - and four vacant seats at the Commission, FERC hydro policy appears poised for upheaval. The groups have proposed a multipoint program to address perceived shortcomings in the FERC's hydroelectric relicensing procedures. The program includes recommendations to: Shorten dam licenses (which currently stretch 30 to 50 years) and require the FERC to periodically reevaluate the terms of hydropower licenses; Increase Congressional oversight of the FERC to assure adherence to environmental laws, including the National Environmental Policy Act, which mandates the preparation of environmental impact statements where appropriate; Mandate facilities for upstream and downstream fish passage; Establish a mitigation fund, collectable from dam owners, for river conservation and restoration programs; Promote all alternatives to relicensing projects, including denial of project licenses; and Reassign the FERC's hydropower jurisdiction to another federal agency, such as the Environmental Protection Agency or the Department of the Interior

  14. Aquatic vegetation were photographed from aircraft from Florida Bay, Indian River (Florida), and the Coast of Massachusetts (NODC Accession 0000411)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — Aerial photographs were taken of the aquatic vegetation of Florida Bay, Indian River (Florida), and the Coast of Massachusetts. Photographs were scanned and...

  15. 76 FR 46840 - Time Extension To Accept Proposals, Select One Lessee, and Contract for Hydroelectric Power...

    Science.gov (United States)

    2011-08-03

    ... Lessee, and Contract for Hydroelectric Power Development at the Pueblo Dam River Outlet, a Feature of the... Lessee, and Contract for Hydroelectric Power Development at the Pueblo Dam River Outlet, a feature of the... considered timely only if it is received in the office of the Lease of Power Privilege Coordinator by or...

  16. 77 FR 34030 - BOST1 Hydroelectric LLC; Notice of Intent To File License Application, Filing of Pre-Application...

    Science.gov (United States)

    2012-06-08

    ... Hydroelectric LLC; Notice of Intent To File License Application, Filing of Pre-Application Document, and.... Date Filed: March 21, 2012. d. Submitted By: BOST1 Hydroelectric LLC (BOST1). e. Name of Project: Coon Rapids Dam Hydroelectric Project. f. Location: Mississippi River in Hennepin and Anoka counties...

  17. Linking Indian rivers vs Bay of Bengal monsoon Activity

    Digital Repository Service at National Institute of Oceanography (India)

    Rajamani, V.; Mohanty, U.C.; Ramesh, R.; Bhat, G.S.; Vinayachandran, P.N.; Sengupta, D.; PrasannaKumar, S.; Kolli, R.K.

    stream_size 12553 stream_content_type text/plain stream_name CurrSci_2006_Linking_rivers.pdf.txt stream_source_info CurrSci_2006_Linking_rivers.pdf.txt Content-Encoding ISO-8859-1 Content-Type text/plain; charset=ISO-8859.... Stratification below the mixed layer also affects the chemical and bi o logical pro c esses in the Bay. It is worth noting here that because the low salinity layer in the BOB prevents vertical mi x ing, the Bay is not a source of CO 2 to the atmo s- phere...

  18. Climate change and hydroelectric production

    International Nuclear Information System (INIS)

    Raban, R.R.

    1991-01-01

    Manitoba Hydro is planning for the possibility of climate change, which has the potential to adversely effect its hydroelectric generating potential. Theoretical and physical evidence for a global warming are reviewed, and it is shown that some of Manitoba Hydro's own measurements support a warming hypothesis. The most significant effect on the hydraulic generating system would be associated with diminished river flows. Winter hydraulic generation capability would be reduced if the magnitude of the change were sufficient to cause several freeze-ups and break-ups within a given season. Incidence of transmission line icing would probably increase, permafrost recession may undermine tower foundations, and conductor resistance may increase to increase energy loss. Ice crossings and winter roads would be adversely affected, and a restriction on fossil fuel consumption could limit thermal generation and increase demand for hydroelectric or nuclear energy. Manitoba Hydro is examining a number of no-cost or low-cost options to accomodate potential climate change, using probable maximum precipitation hydrologic technology, research into conductor galloping, line icing detection, and hydrological investigations

  19. Hydroelectricity and territories; L'hydroelectricite et les territoires

    Energy Technology Data Exchange (ETDEWEB)

    Rocq, Sylvie [Syndicat Mixte d' Etude et d' Amenagement de la Garonne, 61, rue Pierre Cazeneuve 31200 Toulouse (France); Moor, Jean-Francois; Comeau, Aline [Agence de l' eau Adour-Garonne, 90 rue de Feretra 31078 Toulouse Cedex 4 (France); Thomas, Michael [Etablissement Public Territorial du Bassin de la Dordogne - Epidor, Le Tournepique, 24250 Castelnaud-la-Chapelle (France)

    2012-01-15

    On our river territories, the development of renewable energy and the restoration of the quality of the aquatic ecosystems both illustrate the need to reconcile the different usages of water resources while still guaranteeing proper functioning of the ecosystems. Hydroelectricity is the crux of the problem. Because of its mountainous hydrographic network and its favourable hydrology, the Adour-Garonne basin witnessed large-scale development of its hydroelectric potential throughout the 20. century. Approaching the question of hydroelectricity from the point of view of the river territories puts all the challenges facing them into their true perspective. Two distinct examples in the Adour-Garonne basin illustrate the partnership between the Water Agency and the local authorities in the Garonne and Dordogne basins: on the Garonne River, reconciling water usages with the maintenance of adequate water levels at times of drought; on the Dordogne River, reducing the impact of the hydro-peaking. (authors)

  20. A summary of water chemistry changes following hydroelectric development in northern Manitoba, Canada

    International Nuclear Information System (INIS)

    Williamson, D.A.; Ralley, W.E.

    1993-01-01

    A detailed summary is provided from five major water quality studies undertaken in northern Manitoba to assess the effects of hydroelectric projects on water quality. Physical changes occurring with the area affected by both the Churchill River diversion and Lake Winnipeg regulation have led to water quality changes in many cases. Phosphorus appeared to increase at some sites while decreasing at others, reflecting a new balance between erosion of new P sources and later uptake or deposition. Color declined at all sites except at Red Head Rapids. Turbidity increased in Southern Indian Lake and in the Burntwood River at Thompson in response to the Churchill diversion, but turbidity has historically exceeded drinking water quality objectives. It is unclear whether the observed changes in water chemistry may have the potential to directly impact aquatic life and wildlife. A major limitation of the water quality data set is the lack of pre-development data for many of the trace elements analyzed. Relative to an upstream reference site, concentrations of Cu, Pb, and Zn were slightly higher at some sites affected by hydroelectric development, but it is not known whether this condition existed prior to development. Exceedances of water quality objectives for some trace elements occurred intermittently at some sites but it is not possible to determine whether these exceedances occurred infrequently historically as a result of natural variability. 34 refs., 1 fig., 13 tabs

  1. What share for hydroelectricity in France?

    International Nuclear Information System (INIS)

    Bongrand, Th.; Bouvier, E.; Francois, M.; Martin, J.M.; Tardieu, B.; Vogien, M.; Cruchon, Ph.; Miquel, J.; Gariel, A.; Levasseur, L.; Mallet, J.P.

    2004-01-01

    This document gathers 10 presentations (articles) given at the 2. meeting on hydroelectricity, held at Grenoble on May 2004. The papers present some examples of realizations in the domain of small-hydropower, the R and D in progress and some recent advances in hydraulic engineering, the safety and quality aspects, and the environmental impacts and sustainable development of hydroelectric power: 1 - examples of small hydropower plants in France and in progress at SOGREAH (T. Bongrand); 2 - the pico-power plants implemented on drinkable water networks (E. Bouvier); 3 - MINI-AQUA: the mini-hydro solution (M. Francois); 4 - Grenoble and the Alpine valley, pole of hydraulic and hydroelectric competences (J.M. Martin); 5 - history and R and D (B. Tardieu); 6 - advances in engineering for a forefront industry (M. Vogien); 7 - improvement of hydraulic safety (P. Cruchon); 8 - a ISO 14001 certification experience in the domain of hydroelectricity (A. Gariel); 9 - the Rhone river development, reserved flow rate and sustainable development (L. Levasseur); 10 - small hydropower: impact and integration (J.P. Mallet). (J.S.)

  2. Spatio-temporal trends of rainfall across Indian river basins

    Science.gov (United States)

    Bisht, Deepak Singh; Chatterjee, Chandranath; Raghuwanshi, Narendra Singh; Sridhar, Venkataramana

    2018-04-01

    Daily gridded high-resolution rainfall data of India Meteorological Department at 0.25° spatial resolution (1901-2015) was analyzed to detect the trend in seasonal, annual, and maximum cumulative rainfall for 1, 2, 3, and 5 days. The present study was carried out for 85 river basins of India during 1901-2015 and pre- and post-urbanization era, i.e., 1901-1970 and 1971-2015, respectively. Mann-Kendall ( α = 0.05) and Theil-Sen's tests were employed for detecting the trend and percentage of change over the period of time, respectively. Daily extreme rainfall events, above 95 and 99 percentile threshold, were also analyzed to detect any trend in their magnitude and number of occurrences. The upward trend was found for the majority of the sub-basins for 1-, 2-, 3-, and 5-day maximum cumulative rainfall during the post-urbanization era. The magnitude of extreme threshold events is also found to be increasing in the majority of the river basins during the post-urbanization era. A 30-year moving window analysis further revealed a widespread upward trend in a number of extreme threshold rainfall events possibly due to urbanization and climatic factors. Overall trends studied against intra-basin trend across Ganga basin reveal the mixed pattern of trends due to inherent spatial heterogeneity of rainfall, therefore, highlighting the importance of scale for such studies.

  3. Small hydroelectric power plants

    International Nuclear Information System (INIS)

    Helgesen, Boerre

    2002-01-01

    Small hydroelectric power plants are power plants of 1 - 10 MW. For a supplier, this is an unnatural limit. A more natural limit involves compact engine design and simplified control system. The article discusses most of the engine and electrotechnical aspects in the development, construction and operation of such a plant

  4. Genetic variability of wild populations of Leporinus elongatus in the São Domingos River - MS Brazil: a preliminary view on the construction of the hydroelectric plant

    Directory of Open Access Journals (Sweden)

    Ricardo Pereira Ribeiro

    2016-09-01

    Full Text Available Most of the electricity used in Brazil comes from hydroelectric plants, mainly due to the great availability of its water resources. However, the construction of these plants denotes serious problems related to migration of native fish and the genetic conservation of stocks. Current study evaluates two wild population of Leporinus elongatus (piapara located downstream (Population A - PopA and upstream (Population B - PopB of the Cachoeira Branca before the construction of the São Domingos hydroelectric plant (HPP in the Mato Grosso do Sul State, Brazil. Thirty samples from caudal fins were collected and analyzed for each population. Eighty-nine fragments, including 72 polymorphic ones (80.9%, were analyzed. Low fragments (less than 0.100 in both populations (PopA = 2 and PopB = 3 were identified. Nine fixed fragments (frequency 1.000 (PopA = 3 and PopB = 6, and four exclusive fragments (PopA = 3 and PopB = 1 were also reported. The genetic variability within populations, calculated by Shannon Index and by percentage of polymorphic fragments, indicated high rates of intrapopulation variability (PopA = 0.309 and 61.80% and PopB = 0.392 and 71.90%, respectively. Genetic distance and identity rates (0.089 and 0.915, respectively were different between populations, whilst AMOVA showed that most variations lie within the populations and not between them. Fst and Nm rates showed moderate genetic differentiation with low numbers of migrants. Results reveal populations with high intra-population genetic variability and genetic differentiation, with low gene flow. The passage ladders of São Domingos HPP should control fish transposition to preserve genetic variability.

  5. Temporal and spatial distribution of young Brachyplatystoma spp. (Siluriformes: Pimelodidae) along the rapids stretch of the Madeira River (Brazil) before the construction of two hydroelectric dams.

    Science.gov (United States)

    Cella-Ribeiro, A; Assakawa, L F; Torrente-Vilara, G; Zuanon, J; Leite, R G; Doria, C; Duponchelle, F

    2015-04-01

    Monthly (April 2009 to May 2010) bottom-trawl sampling for Brachyplatystoma species along the rapids stretch of the Madeira River in Brazil revealed that Brachyplatystoma rousseauxii larvae and juveniles were present in low abundances in all areas and during all hydrological periods. The presence of larvae and juveniles throughout the hydrological cycle suggests asynchronous spawning in the headwaters of the Madeira River. © 2015 The Fisheries Society of the British Isles.

  6. 76 FR 67178 - Wells Hydroelectric Project; Notice of Availability of the Final Environmental Impact Statement...

    Science.gov (United States)

    2011-10-31

    ... DEPARTMENT OF ENERGY Federal Energy Regulatory Commission [Project No. 2149-152] Wells Hydroelectric Project; Notice of Availability of the Final Environmental Impact Statement for the Wells... application for license for the Wells Hydroelectric Project (FERC No. 2149), located on the Columbia River in...

  7. 76 FR 70437 - Jordan Hydroelectric Limited Partnership; Notice of Availability of Final Environmental Assessment

    Science.gov (United States)

    2011-11-14

    ... DEPARTMENT OF ENERGY Federal Energy Regulatory Commission [ Project No. 12737-002] Jordan Hydroelectric Limited Partnership; Notice of Availability of Final Environmental Assessment In accordance with... original license for the 3.7-megawatt (MW) Gathright Hydroelectric Project located on the Jackson River in...

  8. New erection program of the hydroelectric power plant Beznau. Das Neubauprojekt des hydraulischen Kraftwerkes Beznau

    Energy Technology Data Exchange (ETDEWEB)

    Bretscher, B; Hauenstein, W [NOK Nordostschweizerische Kraftwerke AG, Baden (Switzerland)

    1992-02-21

    The projected hydroelectric power plant at Beznau on the Aare river will produce about 43% more electric power than the present hydroelectric power plant. The water level and the buildings in the Aare will remain unchanged, so that the enviromental impact will be relativley slight. The project is in accordance with the building permit so that no adaptations on modifications will be required. (orig.).

  9. Hydroelectric power and privatisation

    International Nuclear Information System (INIS)

    Frankovic, B.

    2000-01-01

    The paper considers privatisation aspects of both the existing hydroelectric power plants presently owned by the Croatian state and those to be built in the future. The paper highlights the water power utilisation as just one of the possible purposes of water and land resources development, which are the most important segment of the physical development of the Croatian territory, and the fact that water and land are public wealth. (author)

  10. Structure dynamics of a fish community over ten years of formation in the reservoir of the hydroelectric power plant in upper Uruguay River.

    Science.gov (United States)

    Schork, G; Zaniboni-Filho, E

    2017-11-01

    The objective of this study was to evaluate the structure of the fish assemblage in the ten years following the closing of the lake of the Itá Hydroelectric Power Plant. Seasonal collections were conducted from 2001 to 2010. During this period, 44,834 fish were captured, totaling 3,818.01 kg, among 8 orders, 24 families and 84 species. In general, profound changes were not observed in the fish assemblage in the ten years after the formation of the Itá lake. Few species changed in dominance over time, while many were rare in the environment. The ichthyofauna in the reservoir was dominated by small and medium size opportunist species that conduct short or no migratory movements. Among the most abundant, six species were responsible for more than 50% of the numeric representation: Steindachnerina brevipinna, Astyanax fasciatus, Apareiodon affinis, Hypostomus isbrueckeri, Iheringichthys labrosus and Loricariichthys anus. The increase in the representation of the later species stood out. The biomass was dominated by Steindachneridion scriptum, Prochilodus lineatus, I. laborsus, Schizodon nasutus, Hoplias malabaricus, Acestrorhynchus pantaneiro, Hoplias lacerdae, H. isbrueckeri and L. anus. Despite the presence of large migrators in the region of the reservoir, their vulnerability was revealed by the low numeric abundance and accidental capture. The k-dominance curve of numerical abundance and biomass indicates a moderately disturbed community, in which the representation of small species was also important to the amounts of biomass.

  11. [Effects of the installation of the Rosal hydroelectric power station, Itabapoana River, States of Espírito Santo and Rio de Janeiro, on anophelinae, planorbidae and phlebotominae].

    Science.gov (United States)

    Rezende, Helder Ricas; Sessa, Paulo Augusto; Ferreira, Adelson Luiz; dos Santos, Claudiney Biral; Leite, Gustavo Rocha; Falqueto, Aloísio

    2009-01-01

    The construction of dams usually changes the composition of the fauna within their areas of influence. In the area where the Rosal hydroelectric power station has been installed, in the States of Espírito Santo and Rio de Janeiro, changes to the abundance of anophelinae, planorbidae and phlebotominae were evaluated before (1998-2000) and after (2000-2005) the damming. Nine sample collection points were defined, each represented by a home and its outbuildings, shelters for domestic animals and water collection points within a radius of 150m. One hundred and three adult anophelinae were collected before the damming and 313 afterwards; 200 immature anophelinae before and 708 afterwards; 868 planorbidae before and 486 afterwards; and 2,979 phlebotominae before and 912 afterwards. The vector record, consisting of anophelinae, planorbidae and phlebotominae, shows the potential of this area for transmission of malaria, schistosomiasis and American cutaneous leishmaniasis. However, the environmental changes did not increase the risk of the occurrence of these diseases.

  12. Phenotypic differentiation of Barilius bendelisis (Cypriniformes: Cyprinidae) in four rivers from Central Indian Himalaya.

    Science.gov (United States)

    Mir, Javaid Iqbal; Saxena, Neha; Patiyal, Rabindar Singh; Sahoo, Prabhati Kumari

    2015-03-01

    Barilius bendelisis, commonly known as Indian Hill Trout is an upland water fish of South East Asia. It belongs to the family Cyprinidae and dwells in shallow, clear and cold water. In this study, the intraspecific variation of Barilius bendelisis, on the basis of morphometric characters, was investigated. Altogether, 402 specimens were collected from four rivers in the Central Indian Himalaya. A truss network was constructed by interconnecting 12 landmarks to yield 30 distance variables that were extracted from digital images of specimens using tpsDig2 and PAST software. Allometric transformed truss measurements were subjected to univariate analysis of variance, factor analysis and discriminant analysis. All variables exhibited significant differences between the populations. Altogether 88% of the specimens were classified into their original populations (81.98% under a 'leave-one-out' procedure). With factor analysis measurements of the head region, the middle portion and the caudal region had high loadings on the first and second axis. The results indicated that B. bendelisis has significant phenotypic heterogeneity between the geographically isolated regions of Central Indian Himalaya. We hypothesize that the marked interspecific variation in B. bendelisis is the result of local ecological conditions.

  13. Hyperspectral signatures and WorldView-3 imagery of Indian River Lagoon and Banana River Estuarine water and bottom types

    Science.gov (United States)

    Bostater, Charles R.; Oney, Taylor S.; Rotkiske, Tyler; Aziz, Samin; Morrisette, Charles; Callahan, Kelby; Mcallister, Devin

    2017-10-01

    Hyperspectral signatures and imagery collected during the spring and summer of 2017 and 2016 are presented. Ground sampling distances (GSD) and pixel sizes were sampled from just over a meter to less than 4.0 mm. A pushbroom hyperspectral imager was used to calculate bidirectional reflectance factor (BRF) signatures. Hyperspectral signatures of different water types and bottom habitats such as submerged seagrasses, drift algae and algal bloom waters were scanned using a high spectral and digital resolution solid state spectrograph. WorldView-3 satellite imagery with minimal water wave sun glint effects was used to demonstrate the ability to detect bottom features using a derivative reflectance spectroscopy approach with the 1.3 m GSD multispectral satellite channels centered at the solar induced fluorescence band. The hyperspectral remote sensing data collected from the Banana River and Indian River Lagoon watersheds represents previously unknown signatures to be used in satellite and airborne remote sensing of water in turbid waters along the US Atlantic Ocean coastal region and the Florida littoral zone.

  14. Attracting finance for hydroelectric power

    International Nuclear Information System (INIS)

    Besant-Jones, John

    1996-01-01

    Hydroelectricity will continue to be important for meeting power requirements in developing countries. Much of the funding required for hydroelectric projects must come from non-government source; hydroelectric projects will therefore need to be attractive to private investors. This note explores the risks investors face, how this can be mitigated, and how the World Bank group can offer advice (as well as finance) to member countries to facilitate investment in hydro electric projects. 3 refs., 1 fig

  15. Environment and hydroelectricity colloquium - Synthesis

    International Nuclear Information System (INIS)

    Aelbrecht, Denis; Abadie, Marc; Baril, Dominique; Delacoux, Jean-Yves; Delaunay, Alexis; Loudiere, Daniel; Penalba, Anne; Pont, Didier; Rocq, Sylvie; Roult, Didier; Sheibani, Neda; Thevenet, Regis; Weisrock, Ghislain

    2010-10-01

    This document proposes a synthesis of a colloquium dedicated to the interactions between hydroelectric installations and the environment. The four sessions respectively addressed the impacts of hydroelectric installations on ecosystems and more particularly on pisciculture populations (strategies for migration restoration, development of fish-friendly turbines), the sedimentary management of hydroelectric installations, the implementation of the Water Framework European Directive (Austrian experience, biological assessment criteria), and examples of environmental integration of existing or projected installations

  16. Impacts of boreal hydroelectric reservoirs on seasonal climate and precipitation recycling as simulated by the CRCM5: a case study of the La Grande River watershed, Canada

    Science.gov (United States)

    Irambona, C.; Music, B.; Nadeau, D. F.; Mahdi, T. F.; Strachan, I. B.

    2018-02-01

    Located in northern Quebec, Canada, eight hydroelectric reservoirs of a 9782-km2 maximal area cover 6.4% of the La Grande watershed. This study investigates the changes brought by the impoundment of these reservoirs on seasonal climate and precipitation recycling. Two 30-year climate simulations, corresponding to pre- and post-impoundment conditions, were used. They were generated with the fifth-generation Canadian Regional Climate Model (CRCM5), fully coupled to a 1D lake model (FLake). Seasonal temperatures and annual energy budget were generally well reproduced by the model, except in spring when a cold bias, probably related to the overestimation of snow cover, was seen. The difference in 2-m temperature shows that reservoirs induce localized warming in winter (+0.7 ± 0.02 °C) and cooling in the summer (-0.3 ± 0.02 °C). The available energy at the surface increases throughout the year, mostly due to a decrease in surface albedo. Fall latent and sensible heat fluxes are enhanced due to additional energy storage and availability in summer and spring. The changes in precipitation and runoff are within the model internal variability. At the watershed scale, reservoirs induce an additional evaporation of only 5.9 mm year-1 (2%). We use Brubaker's precipitation recycling model to estimate how much of the precipitation is recycled within the watershed. In both simulations, the maximal precipitation recycling occurs in July (less than 6%), indicating weak land-atmosphere coupling. Reservoirs do not seem to affect this coupling, as precipitation recycling only decreased by 0.6% in July.

  17. Hydroelectricity at the crossroad: let us give a new momentum to the first renewable energy. White paper on hydroelectricity

    International Nuclear Information System (INIS)

    2017-01-01

    This publication first indicates some data which illustrate the role, importance and development perspectives of hydroelectricity in terms of energy production and in terms of jobs. It outlines that, due to its high adaptation capacity and flexibility, hydroelectricity is an important factor for territory development, that it has a major role in energy supply safety, in the energy mix, and in decentralised energy production. It proposes an overview of the different types of hydroelectric installations: reservoirs for a flexible production and supply safety, run of river hydro systems for a continuous and renewable energy production, pumped storage power stations for mass storage of electric energy. It proposes an overview of assets of hydroelectric energy: implementation of energy transition on the long term, development of an industrial sector of excellence, a responsible and supportive energy, compatibility between hydroelectricity, biodiversity and water usages. Proposals are then formulated to give electricity a new momentum: a new orientation of national and European policies for a better global consistency, a new orientation of economic choices and tax policy as incentives to maintenance and development of the hydroelectric sector, and a fair compensation of services provided to the electric power system

  18. Concession renewal of Kembs' hydroelectric head on the Rhine river; Renouvellement de la concession de la chute hydro-electrique de Kembs sur le Rhin

    Energy Technology Data Exchange (ETDEWEB)

    Baron, P.; Defoug, H.; Petit, D

    2000-07-15

    In order to evaluate the different impacts of the concession renewal of Kembs' water head on the Rhine river, all aspects have been considered and are reported in this document: international aspects, influence of the dam on navigation and floods, hydrology of Alsace plain, ecological, energetic and economical aspects, leisure and safety aspects. Several questions have to be put forward which concern the transfrontier relations, the water rights, the problem of derivations, of Rhine river maintenance, the turbine and water depth warranty problems, the flow rate and the restoration of the Rhine island. All these questions must be tackled by the impact study. The implementation of a local procedure follow up made of a permanent technical working group and of a management committee is recommended. (J.S.)

  19. Evaluation of our hydroelectric resources

    International Nuclear Information System (INIS)

    Unsal, Istemi; Onoz, Bihrat

    2006-01-01

    Because of the geo energetic position of our country, its geo strategic importance becomes even greater due to the fact that one of the basic problems of our century is to meet the energy demand. In this study one of the most significant energy resources of our country, hydroelectric energy production resource has been made of subject and a general evaluation has been performed considering our country's conditions. In meeting countries general energy demands diversity of production sources and resources where they are supplied from shows great importance. Our country is quite rich from the aspect of hydroelectric potential which is the most significant among the renewable energy resources. That is why our hydroelectric potential (HEP) has been investigated by considering Feasibility, Operation Specifications, Economy, External Dependence issues in electrical energy planning.. In our country, it is frequently being emphasized that 35% of our HEP has been evaluated though which HEP is of subject, is not explained. While HEP is defined at 4 levels namely as Gross (GHEP), Technical (THEP), Economic (EHEP) and Evaluated HEPs. Our country is placed in 2nd place in Europe from the aspect of GHEP whereas it is placed as one of the last from the aspect of evaluated HEP. Capacity usage for hydroelectric plants has been foreseen as 40.5% (3548 hours/year) by the 2005-2020 planning prepared by ETKB (Ministry of Energy and Natural Resources). On the other hand, capacity usage has been found as 40.3% for the analysis for realized cases using DSI (State Water Works) 2006 data, which is only 0.5% below the foreseen value.What mainly lowers the realized average is the hard pressure applied to hydraulic plants during the period 1995-1999. The situation which arises as a result of this operation policy is wrongly interpreted by DPT (State Planning Organization) and consequently hydroelectric plants are defined as unreliable. However, since sufficient storage plants which will

  20. Optimal control of hydroelectric facilities

    Science.gov (United States)

    Zhao, Guangzhi

    challenging problem of optimizing a sequence of two hydro dams sharing the same river system. The complexity of this problem is magnified and we just scratch its surface here. The thesis concludes with suggestions for future work in this fertile area. Keywords: dynamic programming, hydroelectric facility, optimization, optimal control, switching cost, turbine efficiency.

  1. Multivariate Statistical Analysis of Water Quality data in Indian River Lagoon, Florida

    Science.gov (United States)

    Sayemuzzaman, M.; Ye, M.

    2015-12-01

    The Indian River Lagoon, is part of the longest barrier island complex in the United States, is a region of particular concern to the environmental scientist because of the rapid rate of human development throughout the region and the geographical position in between the colder temperate zone and warmer sub-tropical zone. Thus, the surface water quality analysis in this region always brings the newer information. In this present study, multivariate statistical procedures were applied to analyze the spatial and temporal water quality in the Indian River Lagoon over the period 1998-2013. Twelve parameters have been analyzed on twelve key water monitoring stations in and beside the lagoon on monthly datasets (total of 27,648 observations). The dataset was treated using cluster analysis (CA), principle component analysis (PCA) and non-parametric trend analysis. The CA was used to cluster twelve monitoring stations into four groups, with stations on the similar surrounding characteristics being in the same group. The PCA was then applied to the similar groups to find the important water quality parameters. The principal components (PCs), PC1 to PC5 was considered based on the explained cumulative variances 75% to 85% in each cluster groups. Nutrient species (phosphorus and nitrogen), salinity, specific conductivity and erosion factors (TSS, Turbidity) were major variables involved in the construction of the PCs. Statistical significant positive or negative trends and the abrupt trend shift were detected applying Mann-Kendall trend test and Sequential Mann-Kendall (SQMK), for each individual stations for the important water quality parameters. Land use land cover change pattern, local anthropogenic activities and extreme climate such as drought might be associated with these trends. This study presents the multivariate statistical assessment in order to get better information about the quality of surface water. Thus, effective pollution control/management of the surface

  2. Hydrogeologic setting and ground water flow beneath a section of Indian River Bay, Delaware

    Science.gov (United States)

    Krantz, David E.; Manheim, Frank T.; Bratton, John F.; Phelan, Daniel J.

    2004-01-01

    The small bays along the Atlantic coast of the Delmarva Peninsula (Delaware, Maryland, and Virginia) are a valuable natural resource, and an asset for commerce and recreation. These coastal bays also are vulnerable to eutrophication from the input of excess nutrients derived from agriculture and other human activities in the watersheds. Ground water discharge may be an appreciable source of fresh water and a transport pathway for nutrients entering the bays. This paper presents results from an investigation of the physical properties of the surficial aquifer and the processes associated with ground water flow beneath Indian River Bay, Delaware. A key aspect of the project was the deployment of a new technology, streaming horizontal resistivity, to map the subsurface distribution of fresh and saline ground water beneath the bay. The resistivity profiles showed complex patterns of ground water flow, modes of mixing, and submarine ground water discharge. Cores, gamma and electromagnetic-induction logs, and in situ ground water samples collected during a coring operation in Indian River Bay verified the interpretation of the resistivity profiles. The shore-parallel resistivity lines show subsurface zones of fresh ground water alternating with zones dominated by the flow of salt water from the estuary down into the aquifer. Advective flow produces plumes of fresh ground water 400 to 600 m wide and 20 m thick that may extend more than 1 km beneath the estuary. Zones of dispersive mixing between fresh and saline ground water develop on the upper, lower, and lateral boundaries of the the plume. the plumes generally underlie small incised valleys that can be traced landward to stream draining the upland. The incised valleys are filled with 1 to 2 m of silt and peat that act as a semiconfining layer to restrict the downward flow of salt water from the estuary. Active circulation of both the fresh and saline ground water masses beneath the bay is inferred from the geophysical

  3. Drawdown flushing of a hydroelectric reservoir on the Rhône River: Impacts on the fish community and implications for the sediment management.

    Science.gov (United States)

    Grimardias, David; Guillard, Jean; Cattanéo, Franck

    2017-07-15

    Sediment flushings of hydropower reservoirs are commonly performed to maintain water resource uses and ecosystem services, but may have strong impacts on fish communities. Despite the worldwide scope of this issue, very few studies report quantitative in situ evaluations of these impacts. In June 2012, the drawdown flushing of the Verbois reservoir (Rhône River) was performed and subsequent impacts on the fish community were assessed, both inside the reservoir (fish densities by hydroacoustic surveys) and downstream (short-term movement and survival of radio tracked adult fish). Results showed that after the flushing fish acoustic density decreased by 57% in the reservoir, and no recolonization process was observed over the following 16 months. Downstream of the dam, the global apparent survival of fish to the flushing was estimated at 74%, but differed between species. The nine-year delay from the previous flushing and thus the amount of sediments to remove were too stressful for the low-resilience fish community of the Rhône River. Alternative flushing schedules are discussed to reduce these impacts. Copyright © 2017 Elsevier Ltd. All rights reserved.

  4. Ecological aspects of the sandfly fauna (Diptera, Psychodidae in an American cutaneous leishmaniasis endemic area under the influence of hydroelectric plants in Paranapanema river, State of Paraná, Brazil

    Directory of Open Access Journals (Sweden)

    Mariza Fordellone Rosa Cruz

    2012-08-01

    Full Text Available INTRODUCTION: An epidemiological study was undertaken to identify determinant factors in the occurrence of American cutaneous leishmaniasis in areas under the influence of hydroelectric plants in Paranapanema river, State of Paraná, Brazil. The ecological aspects of the phlebotomine fauna were investigated. METHODS: Sandflies were sampled with automatic light traps from February 2004 to June 2006 at 25 sites in the urban and rural areas of Itambaracá, and in Porto Almeida and São Joaquim do Pontal. RESULTS: A total of 3,187 sandflies of 15 species were captured. Nyssomyia neivai predominated (34.4%, followed by Pintomyia pessoai (32.6%, Migonemyia migonei (11.6%, Nyssomyia whitmani (8.8%, and Pintomyia fischeri (2.7%, all implicated in the transmission of Leishmania. Males predominated for Ny. neivai, and females for the other vector species, with significant statistical differences (p < 0.001. Nyssomyia neivai, Pi. pessoai, Ny. whitmani, Brumptomyia brumpti, Mg. migonei, and Pi. fischeri presented the highest values for the Standardized Species Abundance Index (SSAI. The highest frequencies and diversities were found in the preserved forest in Porto Almeida, followed by forests with degradation in São Joaquim do Pontal and Vila Rural. CONCLUSIONS: Sandflies were captured in all localities, with the five vectors predominating. Ny. neivai had its highest frequencies in nearby peridomestic environments and Pi. pessoai in areas of preserved forests. The highest SSAI values of Ny. neivai and Pi. pessoai reflect their wider dispersion and higher frequencies compared with other species, which seems to indicate that these two species may be transmitting leishmaniasis in the area.

  5. 76 FR 61689 - Sutton Hydroelectric Company, LLC

    Science.gov (United States)

    2011-10-05

    ... Hydroelectric Company, LLC Notice of Site Visit On February 6, 2008, Sutton Hydroelectric Company, LLC (Sutton Hydroelectric) filed a notice of intent and a preliminary application document to license its proposed Sutton Hydroelectric Project No. 12693. The project would be located at the U.S. Army Corps of Engineers' (Corps...

  6. Which hydroelectric potential in your region?

    International Nuclear Information System (INIS)

    2011-01-01

    Illustrated by photos, maps, figures and graphs, this Power Point presentation outlines the important remaining potential of hydroelectricity in France: 10.6 TWh. It indicates how this potential has been assessed and calculated. Even if possibilities exist everywhere (either by building new dams or by exploiting existing weirs), four regions present a higher potential for new works: Rhone-Alpes, Midi-Pyrenees, Auvergne, and Provence-Alpes-Cote d'Azur. Maps indicate the concerned rivers and locations in some regions. Such projects which could boost economic local, regional and national development must be designed while taking planning tools into account (notably the climate-air-energy regional schemes), and rules related to river preservation

  7. HLA class I variation controlled for genetic admixture in the Gila River Indian Community of Arizona: a model for the Paleo-Indians.

    Science.gov (United States)

    Williams, R C; McAuley, J E

    1992-01-01

    The genetic distribution of the HLA class I loci is presented for 619 "full blooded" Pima and Tohono O'odham Native Americans (Pimans) in the Gila River Indian Community. Variation in the Pimans is highly restricted. There are only three polymorphic alleles at the HLA-A locus, *A2, *A24, and *A31, and only 10 alleles with a frequency greater than 0.01 at HLA-B where *Bw48 (0.187), *B35 (0.173), and the new epitope *BN21 (0.143) have the highest frequencies. Two and three locus disequilibria values and haplotype frequencies are presented. Ten three-locus haplotypes account for more than 50% of the class I variation, with *A24 *BN21 *Cw3 (0.085) having the highest frequency. Gm allotypes demonstrate that little admixture from non-Indian populations has entered the Community since the 17th century when Europeans first came to this area. As a consequence many alleles commonly found in Europeans and European Americans are efficient markers for Caucasian admixture, while the "private" Indian alleles, *BN21 and *Bw48, can be used to measure Native American admixture in Caucasian populations. It is suggested that this distribution in "full blooded" Pimans approximates that of the Paleo-Indian migrants who first entered the Americas between 20,000 and 40,000 years ago.

  8. A Tale of Two Inlets: Tidal Currents at Two Adjacent Inlets in the Indian River Lagoon

    Science.gov (United States)

    Webb, B. M.; Weaver, R. J.

    2012-12-01

    The tidal currents and hydrography at two adjacent inlets of the Indian River Lagoon estuary (Florida) were recently measured using a personal watercraft-based coastal profiling system. Although the two inlets—Sebastian Inlet and Port Canaveral Inlet—are separated by only 60 km, their characteristics and dynamics are quite unique. While Sebastian Inlet is a shallow (~4 m), curved inlet with a free connection to the estuary, Port Canaveral Inlet is dominated by a deep (~13 m), straight ship channel and has limited connectivity to the Banana River through a sector gate lock. Underway measurements of tidal currents were obtained using a bottom tracking acoustic Doppler current profiler; vertical casts of hydrography were obtained with a conductivity-temperature-depth profiling instrument; and continuous underway measurements of surface water hydrography were made using a Portable SeaKeeper system. Survey transects were performed to elucidate the along-channel variability of tidal flows, which appears to be significant in the presence of channel curvature. Ebb and flood tidal currents in Sebastian Inlet routinely exceeded 2.5 m/s from the surface to the bed, and an appreciable phase lag exists between tidal stage and current magnitude. The tidal currents at Port Canaveral Inlet were much smaller (~0.2 m/s) and appeared to be sensitive to meteorological forcing during the study period. Although the lagoon has free connections to the ocean 145 km to the north and 45 km to the south, Sebastian Inlet likely drains much of the lagoon to its north, an area of ~550 sq. km.

  9. Carbon emission from global hydroelectric reservoirs revisited.

    Science.gov (United States)

    Li, Siyue; Zhang, Quanfa

    2014-12-01

    Substantial greenhouse gas (GHG) emissions from hydropower reservoirs have been of great concerns recently, yet the significant carbon emitters of drawdown area and reservoir downstream (including spillways and turbines as well as river reaches below dams) have not been included in global carbon budget. Here, we revisit GHG emission from hydropower reservoirs by considering reservoir surface area, drawdown zone and reservoir downstream. Our estimates demonstrate around 301.3 Tg carbon dioxide (CO2)/year and 18.7 Tg methane (CH4)/year from global hydroelectric reservoirs, which are much higher than recent observations. The sum of drawdown and downstream emission, which is generally overlooked, represents 42 % CO2 and 67 % CH4 of the total emissions from hydropower reservoirs. Accordingly, the global average emissions from hydropower are estimated to be 92 g CO2/kWh and 5.7 g CH4/kWh. Nonetheless, global hydroelectricity could currently reduce approximate 2,351 Tg CO2eq/year with respect to fuel fossil plant alternative. The new findings show a substantial revision of carbon emission from the global hydropower reservoirs.

  10. Anatomy of an interrupted irrigation season: Micro-drought at the Wind River Indian Reservation

    Directory of Open Access Journals (Sweden)

    Shannon M. McNeeley

    Full Text Available Drought is a complex phenomenon manifested through interactions between biophysical and social factors. At the Wind River Indian Reservation (WRIR in west-central Wyoming, water shortages have become increasingly common since the turn of the 21st century. Here we discuss the 2015 water year as an exemplar year, which was characterized by wetter-than-normal conditions across the reservation and, according to the U.S. Drought Monitor, remained drought-free throughout the year. Yet parts of the reservation experienced harmful water shortages, or “micro-drought” conditions, during the growing season in 2015. In this assessment of the 2015 water year at the WRIR we: (1 describe the hydroclimatic and social processes under way that contributed to the 2015 water year micro-drought in the Little Wind Basin; (2 compare water availability conditions within and between other basins at the WRIR to illustrate how micro-droughts can result from social and environmental features unique to local systems; and (3 describe how a collaborative project is supporting drought preparedness at the WRIR. We combine a social science assessment with an analysis of the hydroclimate to deconstruct how shortages manifest at the WRIR. We provide insights from this study to help guide drought assessments at local scales. Keywords: Drought, Climate vulnerability, Drought preparedness, Indigenous adaptation, Co-production

  11. Fatal Asphyxiation in Bottlenose Dolphins (Tursiops truncatus from the Indian River Lagoon.

    Directory of Open Access Journals (Sweden)

    Megan Stolen

    Full Text Available Multiple single case reports of asphyxiation in dolphins caused by fish lodged in the esophagus exist. However, the significance of this cause of mortality in a single population has not been documented. We performed a retrospective evaluation of pathology records from stranded bottlenose dolphins (Tursiops truncatus from the Indian River Lagoon to evaluate the impact of this cause of death on this population. From 1997 to 2011, asphyxiation due to choking was identified as the cause of death in 14 of 350 cases (4%. Sampling of an unrelated but adjacent population over this same period yielded 186 necropsy cases of bottlenose dolphins with no cases of asphyxiation. Asphyxiated animals presented with a fish lodged in the cranial esophagus associated with a dislocated and obstructed or compressed larynx. There was no clear sex predilection. Affected animals included 12 adults and two juveniles. The fish species involved included sheepshead, black chin tilapia and striped mojarra. In five cases, recreational fishing gear was also present. Cetacean choking is related to selection of prey fish species with strong dorsal spines and may be secondarily associated with fish attached to fishing gear. Prey abundance and dolphin behavior may influence these selections. Environmental alterations leading to changes in prey availability or increased interactions with fishing gear may change the significance of fatal choking in dolphin populations.

  12. Hydroelectric power and hydroelectric power plants. V. 1

    International Nuclear Information System (INIS)

    1991-06-01

    Following the oil crises of 1973 and 1979, there was renewed and justifiable interest in small hydroelectric plants. The maximum power of these plants rarely exceeds 10 MW, and their development will surely increase in the coming decades. Hydraulic power is a national renewable resource, unaffected by geopolitical problems, and above all, non polluting. Many countries with their own hydraulic resources in both the industrialized and the developing world have expressed needs for the development of small hydroelectric plants. Hidroenergia 91 Conference is the opportunity to take stock of knowledge gained in the vast field of small hydroelectric plants. The meeting is divided into four subjects: 1 methods for decision aid; 2 environmental impact and accompanying answers; 3 national development policy; 4 world market and international cooperation. This meeting contains 75 papers, 8 papers are in the INIS scope and 72 papers are in the ENERGY DATA BASE scope

  13. Fish passage hydroelectric power plant Linne, Netherlands. Didson measurements

    International Nuclear Information System (INIS)

    Van Keeken, O.A.; Griffioen, A.B.

    2011-11-01

    The hydroelectric power plant in the Dutch Maas River near Linne has a fish deflection and passage system. For this study, two evenings in the months of August and September 2011 were dedicated to examining the extent to which fish approached and used the fish passage system. To establish the swimming behavior of the fish, a high-resolution sonar (DIDSON) was used, which generates moving images of fish in turbid waters, to study their behavior. [nl

  14. Cross currents : hydroelectricity and the engineering of northern Ontario

    Energy Technology Data Exchange (ETDEWEB)

    Manore, J.L. [Calgary Univ., AB (Canada)

    1999-05-01

    The history of hydroelectric development in northern Ontario was reviewed and analysed with special emphasis on the developments along the Mattagami and Abitibi Rivers. The objective was to examine the important factors that shaped modern hydroelectric development in Canada. System builders, the privately owned Nesbitt Thomson Company, the publicly owned Hydro Electric Power Corporation of Ontario and the eventual evolution of the single power system under Ontario Hydro are chronicled. Broad historical themes such as the technological impacts, regionalism, indigenous rights, plus environmental and economic issues are examined, in addition to an appreciation of the importance of electricity in the manufacturing sector of Ontario, the impact of hydroelectric development on the northern environment and on the northern First Nations, who rely on rivers for their subsistence. Until fairly recently, government policies and interpretations of law often excluded the recognition of Aboriginal uses of river systems, thereby limiting First Nations` peoples ability to practice traditional ways of life. In essence, the book is an account of how the northeastern power system in Ontario shaped the social, political and natural environments and how the development of northeastern power sources by southern power developers shaped the regional interactions between Ontario`s north and south. refs., figs.

  15. Cross currents : hydroelectricity and the engineering of northern Ontario

    International Nuclear Information System (INIS)

    Manore, J.L.

    1999-01-01

    The history of hydroelectric development in northern Ontario was reviewed and analysed with special emphasis on the developments along the Mattagami and Abitibi Rivers. The objective was to examine the important factors that shaped modern hydroelectric development in Canada. System builders, the privately owned Nesbitt Thomson Company, the publicly owned Hydro Electric Power Corporation of Ontario and the eventual evolution of the single power system under Ontario Hydro are chronicled. Broad historical themes such as the technological impacts, regionalism, indigenous rights, plus environmental and economic issues are examined, in addition to an appreciation of the importance of electricity in the manufacturing sector of Ontario, the impact of hydroelectric development on the northern environment and on the northern First Nations, who rely on rivers for their subsistence. Until fairly recently, government policies and interpretations of law often excluded the recognition of Aboriginal uses of river systems, thereby limiting First Nations' peoples ability to practice traditional ways of life. In essence, the book is an account of how the northeastern power system in Ontario shaped the social, political and natural environments and how the development of northeastern power sources by southern power developers shaped the regional interactions between Ontario's north and south. refs., figs

  16. Assessment of Environmental Flows for the Rivers of Western Ganges Delta with Special Reference to Indian Sundarban

    Science.gov (United States)

    Bhadra, T.; Hazra, S.; Ghosh, S.; Barman, B. C.

    2016-12-01

    The Indian Sundarban, situated on the western tide-dominated part of the Ganges delta was formed by the sedimentation of the Ganges and its tributaries. Freshwater is a scarce resource in the Sundarban though it is traversed by rivers. Most of the rivers of Western Ganges Delta, which used to nourish the Sundarban, have become defunct with the passage of time. To ensure sustainable flow and to enhance the flow-dependent ecosystem services in this region, assessment of environmental flows within the system is required. A pilot assessment of environment flows, supported by IUCN has been carried out in some specific river reaches of Western Ganges Delta under the present study. The holistic Building Block Methodology (BBM) has been modified and used for the assessment of environmental flows. In the modified BBM, three distinctive blocks namely Hydro-Morphology, Ecology and Socio-Economy have been selected and indicators like Ganges Dolphin (Platanista gangetica), Sundari tree (Heritiera fomes) and Hilsa fish (Tenualosa ilisha) etc. have been determined to assess the environmental flows. As the discharge data of the selected rivers are restricted in the public domain, the SWAT model has been run to generate the discharge data of the classified rivers. The Hydraulic model, HEC-RAS has been calibrated in the selected River reaches to assess the habitat availability and its changes for indicator species under different flow condition. The study reveals that River Bhagirathi-Hugli requires 150-427 cumec additional water in monsoon and 850-1127 cumec additional water in post-monsoon months for Hilsa migration, whereas 327-486 cumec additional water in pre-monsoon and dry season and 227-386 cumec additional water in post-monsoon months are required for Dolphin movement. Flow requirement of river Ichhamati has also been estimated under the present study. The total required flow for the Sundarban ecosystem to reduce the salinity level from 30ppt to 14ppt during the dry and pre

  17. Hydroelectric project at Angliers : Investigation and public hearing report

    International Nuclear Information System (INIS)

    Girard, S.; Bouchard, B.

    2003-08-01

    Public hearings were held by the Bureau d'audiences publiques sur l'environnement concerning a proposed hydroelectric development project at Angliers, Quebec. The proposed hydroelectric plant is to be located at the outlet of the Des Quinze reservoir in the Temiscamingue region (northwest of the province). The site is within the municipality of Angliers, approximately 130 kilometres south of Rouyn-Noranda. The project will exploit the hydroelectric potential of the Ottawa River through a dam at Des Quinze reservoir, which is currently the property of the federal government. During the hearings, several issues were raised, and various topics examined. The political and administrative framework was reviewed, as well as the integration of the project within the community. The impacts, environmental as well as economic, were discussed. After careful examination of all the information, the Commission concluded that the hydroelectric project at Angliers was justified and acceptable from an environmental perspective. The expected economic impact on the community was an essential aspect in determining if the project was acceptable. refs., 4 figs

  18. Surface Water Quality Survey of Northern Indian River Lagoon from Sebastian Inlet to Mosquito Lagoon

    Science.gov (United States)

    Weaver, R. J.; Webb, B. M.

    2012-12-01

    Following news of an emerging brown tide algal bloom in the northern Indian River Lagoon (IRL), researchers sought to gain insight into the surface water quality in the IRL, as well as the extent of the algae coverage. A Portable SeaKeeper from YSI, mounted to a personal watercraft-based coastal profiling system, autonomously collected and analyzed the surface water. The system operates by recording sample data every 12 seconds while continuously underway at speeds up to and greater than 50 km/hr. The researchers covered a transect that started at Sebastian Inlet and followed a zig-zag path extending up through the Haulover Canal and into the Mosquito Lagoon. The survey path covered 166.7 km, and collected 2248 samples. Along the way stops were made at water quality stations used by the Saint John's River Water Management District, so that the data collected can be incorporated into ongoing monitoring efforts. The system analyzed the surface water for dissolved oxygen, pH, chlorophyll-a, salinity, temperature, turbidity, refined fuels, and CDOM. In the two days following the lagoon survey, the inlets at Port Canaveral and Sebastian were also surveyed for tidal currents and hydrography. The IRL transect survey data recorded evidence of the southern extent of the algae bloom in both chlorophyll-a and pH levels. Visual evidence of the bloom was striking as the water in the northern IRL turned a milk chocolaty brown color. Chlorophyll-a levels in the two inlets suggested bloom activity at these locations; however this bloom was different. This oceanic bloom was a result of a persistent upwelling event along the East Florida shelf, and the color was a paler green-yellow. The near-synoptic nature of the comprehensive lagoon survey, conducted in just over 7 hours, allows researchers to obtain a better understanding of water quality in coastal lagoons. Elevated levels of salinity, temperature, and refined fuels in the northern IRL indicate a low exchange rate and absence

  19. Nitrogen limitation of growth and nutrient dynamics in a disturbed mangrove forest, Indian River Lagoon, Florida

    Science.gov (United States)

    Feller, Ilka C.; Whigham, D.F.; McKee, K.L.; Lovelock, C.E.

    2003-01-01

    The objectives of this study were to determine effects of nutrient enrichment on plant growth, nutrient dynamics, and photosynthesis in a disturbed mangrove forest in an abandoned mosquito impoundment in Florida. Impounding altered the hydrology and soil chemistry of the site. In 1997, we established a factorial experiment along a tree-height gradient with three zones, i.e., fringe, transition, dwarf, and three fertilizer treatment levels, i.e., nitrogen (N), phosphorus (P), control, in Mosquito Impoundment 23 on the eastern side of Indian River. Transects traversed the forest perpendicular to the shoreline, from a Rhizophora mangle-dominated fringe through an Avicennia germinans stand of intermediate height, and into a scrub or dwarf stand of A. germinans in the hinterland. Growth rates increased significantly in response to N fertilization. Our growth data indicated that this site is N-limited along the tree-height gradient. After 2 years of N addition, dwarf trees resembled vigorously growing saplings. Addition of N also affected internal dynamics of N and P and caused increases in rates of photosynthesis. These findings contrast with results for a R. mangle-dominated forest in Belize where the fringe is N-limited, but the dwarf zone is P-limited and the transition zone is co-limited by N and P. This study demonstrated that patterns of nutrient limitation in mangrove ecosystems are complex, that not all processes respond similarly to the same nutrient, and that similar habitats are not limited by the same nutrient when different mangrove forests are compared.

  20. Hydroelectric Generating Facilities General Permit ...

    Science.gov (United States)

    2017-08-28

    The Notice of Availability of the Final NPDES General Permits (HYDROGP) for Discharges at Hydroelectric Generating Facilities in Massachusetts (MAG360000) and New Hampshire (NHG360000) and Tribal Lands in the State of Massachusetts was published in the Federal Register on December 7, 2009 (see 74 Fed. Reg. No. 233, pages 64074 - 64075).

  1. Central hydroelectric of Santa Ana

    International Nuclear Information System (INIS)

    Pardo A, German

    2000-01-01

    The paper is related to the construction of an alternating tunnel of conduction to take advantage of the available hydraulic load among the Wiesner Plant and Santa Ana's tanks and of Suba, works required to build a hydroelectric power station with a generation capacity of approximately of 12 MW

  2. Modulation of the Ganges-Brahmaputra River Plume by the Indian Ocean Dipole and Eddies Inferred From Satellite Observations

    Science.gov (United States)

    Fournier, S.; Vialard, J.; Lengaigne, M.; Lee, T.; Gierach, M. M.; Chaitanya, A. V. S.

    2017-12-01

    The Bay of Bengal receives large amounts of freshwater from the Ganga-Brahmaputra (GB) river during the summer monsoon. The resulting upper-ocean freshening influences seasonal rainfall, cyclones, and biological productivity. Sparse in situ observations and previous modeling studies suggest that the East India Coastal Current (EICC) transports these freshwaters southward after the monsoon as an approximately 200 km wide, 2,000 km long "river in the sea" along the East Indian coast. Sea surface salinity (SSS) from the Soil Moisture Active Passive (SMAP) satellite provides unprecedented views of this peculiar feature from intraseasonal to interannual timescales. SMAP SSS has a 0.83 correlation and 0.49 rms-difference to 0-5 m in situ measurements. SMAP and in stu data both indicate a SSS standard deviation of ˜0.7 to 1 away from the coast, that rises to 2 pss within 100 km of the coast, providing a very favorable signal-to-noise ratio in coastal areas. SMAP also captures the strong northern BoB, postmonsoon cross-shore SSS contrasts (˜10 pss) measured along ship transects. SMAP data are also consistent with previous modeling results that suggested a modulation of the EICC/GB plume southward extent by the Indian Ocean Dipole (IOD). Remote forcing associated with the negative Indian Ocean Dipole in the fall of 2016 indeed caused a stronger EICC and "river in the sea" that extended by approximately 800 km further south than that in 2015 (positive IOD year). The combination of SMAP and altimeter data shows eddies stirring the freshwater plume away from the coast.Plain Language SummaryThe Bay of Bengal receives large quantity of freshwater from the Ganges-Brahmaputra river during the monsoon. The resulting low-salinity sea surface has strong implications for the regional climate and living marine resources. In situ observations are too sparse to provide salinity maps in this basin, even every 3 months. In contrast, the SMAP satellite provides maps at 40 km resolution

  3. Assessing Potential Conservation and Restoration Areas of Freshwater Fish Fauna in the Indian River Basins.

    Science.gov (United States)

    Bhatt, Jay P; Manish, Kumar; Mehta, Rajender; Pandit, Maharaj K

    2016-05-01

    Conservation efforts globally are skewed toward terrestrial ecosystems. To date, conservation of aquatic ecosystems, in particular fish fauna, is largely neglected. We provide a country-wide assessment of Indian river ecosystems in order to identify and prioritize areas for protection and restoration of freshwater fish fauna. Using various biodiversity and anthropogenic attributes, coupled with tools of ecological modeling, we delineated areas for fish fauna conservation and restoration in the 20 major river basins of India. To do this, we used prioritization analyses and reserve selection algorithms to derive conservation value index (CVI) and vulnerability index (VI) of the river basins. CVI was estimated using endemicity, rarity, conservation value, and taxonomic singularity, while VI was estimated using a disturbance index derived from percent geographic area of the basin under human settlements, human population density, predominant land use, and total number of exotic fish species in each basin. The two indices, CVI and VI, were converted into geo-referenced maps, and each map was super-imposed onto species richness and forest cover maps, respectively. After superimposition, areas with high CVI and low VI shade intensities were delineated for conservation, while areas with high CVI and high VI shade intensities were demarcated for restoration. In view of the importance of freshwater fish for human livelihoods and consumption, and ecosystems of India's rivers, we call for urgent attention to the conservation of their fish fauna along with restoration of their degraded habitats.

  4. Aspects of the relations between the hydroelectric constructions and environment

    International Nuclear Information System (INIS)

    Michael, I.

    1993-01-01

    By their dimensions hydroelectric constructions constitute one of the evident examples of man's action upon nature, with favorable as well as unfavorable effects. By using past experience, such effects can be correctly establish and evaluated both by specialists from different fields and by representatives of the local population. The paper proposes several criteria for qualitative characterization of such effects. Some favorable and unfavorable effects of dams, lakes, secondary catchment and derivations are discussed. Also, having in view the water flow distribution which would allow a normal insertion of such construction in the environment, despite of some power production diminish diminishing, two proposals are made concerning possible solutions for secondary catchment and the hydroelectric power stations situated in the upper zones of the rivers. (author). 5 refs

  5. Hydroelectric power stations and ecological energy policy

    International Nuclear Information System (INIS)

    Novakova, R.

    1993-01-01

    The report discusses the place of hydroenergy in solving the power and ecological problems of Bulgaria: level of building up of the hydroelectric capacity of the country; possibilities for new hydro electric construction; environmental problems of design, construction and operation of the hydroelectric units; advantages of the hydroelectric engineering. The possibilities of the hydroelectric power plants as an alternative of the other more or less conventional electicity producers are shown in order to help in decision making as regards the problems of the economic, power and environmental crisis. (author)

  6. 78 FR 62616 - Salmon Creek Hydroelectric Company, Salmon Creek Hydroelectric Company, LLC; Notice of Transfer...

    Science.gov (United States)

    2013-10-22

    ... DEPARTMENT OF ENERGY Federal Energy Regulatory Commission [Project No. 3730-005] Salmon Creek Hydroelectric Company, Salmon Creek Hydroelectric Company, LLC; Notice of Transfer of Exemption 1. By letter filed September 23, 2013, Salmon Creek Hydroelectric Company informed the Commission that they have...

  7. Model for energy planning of degraded river basins based on hydrological evaluation of hydroelectric reservoirs in operation; Modelo de planejamento energetico de bacias hidrograficas degradadas baseado na avaliacao hidrica de reservatorios hidreletricos em operacao

    Energy Technology Data Exchange (ETDEWEB)

    Santos, Afonso Henriques Moreira [Universidade Federal de Itajuba (UNIFEI), MG (Brazil); Ferreira, Aloisio Caetano; Ottoni, Arthur Benedicto; Nogueira Neto, Claudio; Silva, Denis de Souza

    2008-07-01

    The human occupation of the hydrographic basin, made in the past without plans, generated alteration of the hydrology characteristics, presenting as direct consequence modifications of its hydric availabilities. Or either, the floods in the rainy periods and the droughts in the ones of dryness currently tend to be more frequent and with bigger intensity. These conditions have affected the operation as well as the planning of the hydroelectric reservoirs, that have generated energy in conditions of different hydric availabilities (worse) of those foreseeing at the time of the project. These situations result in uncertainties and energy losses for the investor as well as in the system. Under such premises, the present article analyzes the energy-economic influences of the deterioration of the hydric regimen of some on exploitations in operation to the system, located in basins degrades in the South, Southeastern and Northeast regions; enhancing the importance of the studies of hydric economy of these units of management (degraded basins) as subsidy of taking of decision for gradual recovery of its hydric availabilities; taking in account the energy optimization of the hydroelectric reservoirs in located operation as well as the minimization of inherent the financial losses to the uncertainties of its hydric resources. (author)

  8. CONTAMINATION STATUS OF CADMIUM IN DIFFERENT BIOTIC AND ABIOTIC COMPONENTS AROUND THE BIDHYADHARI RIVER OF INDIAN SUNDARBAN DELTA

    Directory of Open Access Journals (Sweden)

    Shivaji Bhattacharya

    2014-12-01

    Full Text Available This study has been conducted to estimate the concentration of total Cadmium (Cd in different biotic and abiotic substrates including human in and around the Bidyadhari river of Sundarban delta. Bidyadhari river presently serves as a sewage and excess rainwater outlet from Kolkata metropolitan and adjacent area, which ultimately empties at the Bay of Bengal. The study reveals that the Cd content in surface water of the river and ponds as well as ground water was generally high up to 0.294 µg/ml and 0.205 µg/ml respectively during most of the seasons, which was above the maximum permissible level for drinking water as per various national and international standards like Indian Standard Specification, European Union, WHO, USEPA etc. Though, range of Cd in sediment of the river and ponds was 0.025 to 0.281µg/g and 0.018 to 0.317µg/g respectively but that was considerably higher in grasses up to 0.324µg/g. Backyard hen demonstrated considerably high levels of Cd in their egg up to 0.247µg/g in albumen and 0.272 µg/g in yolk. Goat and cattle demonstrated Cd content in meat up to 0.295µg/g and milk up to 0.295µg/ml respectively which crosses the permissible levels recommended by different international standards. High Cd content in human hairs up to 1.11µg/g indicated considerably bioaccumulation of the metal in local inhabitants resides in the northern part of Sundarban mangrove eco-region. This whole observation may be considered as base line study to know the present status of Cd contamination and bioaccumulation in flora and fauna including humans in Sundarban mangrove eco-region to prepare mitigation planning against this carcinogen from the biota immediately.

  9. Methane and CO2 emissions from China's hydroelectric reservoirs: a new quantitative synthesis.

    Science.gov (United States)

    Li, Siyue; Zhang, Quanfa; Bush, Richard T; Sullivan, Leigh A

    2015-04-01

    Controversy surrounds the green credentials of hydroelectricity because of the potentially large emission of greenhouse gases (GHG) from associated reservoirs. However, limited and patchy data particularly for China is constraining the current global assessment of GHG releases from hydroelectric reservoirs. This study provides the first evaluation of the CO2 and CH4 emissions from China's hydroelectric reservoirs by considering the reservoir water surface and drawdown areas, and downstream sources (including spillways and turbines, as well as river downstream). The total emission of 29.6 Tg CO2/year and 0.47 Tg CH4/year from hydroelectric reservoirs in China, expressed as CO2 equivalents (eq), corresponds to 45.6 Tg CO2eq/year, which is 2-fold higher than the current GHG emission (ca. 23 Tg CO2eq/year) from global temperate hydropower reservoirs. China's average emission of 70 g CO2eq/kWh from hydropower amounts to 7% of the emissions from coal-fired plant alternatives. China's hydroelectric reservoirs thus currently mitigate GHG emission when compared to the main alternative source of electricity with potentially far great reductions in GHG emissions and benefits possible through relatively minor changes to reservoir management and design. On average, the sum of drawdown and downstream emission including river reaches below dams and turbines, which is overlooked by most studies, represents the equivalent of 42% of the CO2 and 92% of CH4 that emit from hydroelectric reservoirs in China. Main drivers on GHG emission rates are summarized and highlight that water depth and stratification control CH4 flux, and CO2 flux shows significant negative relationships with pH, DO, and Chl-a. Based on our finding, a substantial revision of the global carbon emissions from hydroelectric reservoirs is warranted.

  10. Biological effects of simulated discharge plume entrainment at Indian Point Nuclear Power Station, Hudson River estuary, USA

    International Nuclear Information System (INIS)

    Lanza, G.R.; Lauer, G.J.; Ginn, T.C.; Storm, P.C.; Zubarik, L.; New York Univ., N.Y.

    1975-01-01

    Laboratory and field simulations of the discharge plume entrainment of phytoplankton, zooplankton and fish were carried out at the Indian Point Nuclear Station, Hudson River estuary, USA. Phytoplankton assemblages studied on two dates produced different response patterns measured as photosynthetic activity. Chlorophyll-a levels did not change following simulated entrainment. Possible explanations for the differences are discussed. The two abundant copepods Acartia tonsa and Eurytemorta affinis appear to tolerate exposure to discharge plume ΔT without adverse effects. Copepods subjected to plume entrainment may suffer considerable mortality during periods of condenser chlorination. In general, the amphipod Gammarus spp. did not appear to suffer significant mortality during simulated entrainment. Juvenile striped bass, Morone saxatilis, were not affected by simulated plume transit before and during plant condenser chlorination; however, a simulated ''worst possible case'' plume ΔT produced statistically significant moralities. (author)

  11. Mitigation measures for the La Grande 1 hydroelectric development

    International Nuclear Information System (INIS)

    Faucher, O.; Gagnon, R.

    1992-01-01

    Measures to mitigate environmental impacts of the La Grande 1 hydroelectric development are described. An overview is presented of the La Grande 1 project, its surrounding environment, and the principle environmental repercussions of the reservoir, hydrological changes between the dam and river mouth, construction activities and permanent and temporary structures, and presence of workers. Mitigation measures including compensation, corrective measures (deforestation, selective cutting, fish populations, wildlife populations, land rehabilitation, access roads, fisheries, and erosion control), protective measures, enhancement measures, and contract and employment opportunities for the Cree population are described. 10 refs., 2 figs

  12. Population dynamics and reproductive biology of Barilius bendelisis (Cyprinidae: Cypriniformes) from river Gaula of Central Indian Himalaya.

    Science.gov (United States)

    Saxena, Neha; Patiyal, Rabindar Singh; Dube, Kiran; Tiwari, Virendra K

    2016-09-01

    The Indian hill trout cyprinid, Barilius bendelisis is a member of family Cyprinidae that dwells in shallow, cold, and clear water. In this study, growth parameters and reproductive biology of Indian hill trout, Barilius bendelisis from river Gaula, Central Himalaya region, India, were studied. The length-frequency data were grouped sex wise and were analyzed to determine the growth and mortality parameters using the computer software programme, FAO-ICLARM Stock Assessment Tool (FISAT II). Altogether, 501 individuals were collected from river Gaula (November 2013-October 2014) and were preserved in formalin for further analysis. The results showed that the female outnumbered the male population. The minimum GSI of females was observed in the month of October (4.93 ± 0.26) and for males in the month of June and July (0.093 ± 0.12), whereas, the maximum value was in the month of April for both females (13.47 ± 0.52) and males (1.21 ± 0.12). Fluctuation in GSI values had a bimodal pattern showing two peaks during March-May and August-September in both the sexes, indicating the common spawning period of fish. The slope of regression showed the negative allometric growth for both males and females (b= 2.65 for male and b= 2.5 for female). A significant relationship between length and weight was observed in the present study (p < 0.05). The ELEFAN-I estimated L∞ and K of the von Bertalanffy growth factor for males (17.33 cm and 0.310 per year), females (17.33 cm and 0.3 per year) and pooled sexes (17.33 cm and 0.240 per year). The results indicated that Barilius bendelisis is a small sized fish having negative allometric growth that spawns twice a year. Thus, the present study on biological traits represents the baseline information for effective production, conservation and restoration planning.

  13. Competitive analysis of small hydroelectric power plants

    International Nuclear Information System (INIS)

    Assad, L.S.; Placido, R.

    1990-01-01

    The agreement between CPFL/UNICAMP/EFEI for developing energetic planning of Small Hydroelectric Power Plants construction is described. Some notions for showing the more economic alternative between decide by Small Hydroelectric Power Plants construction and continue supply the market by inter ligated system generation are shown in this stage of the agreement. (author)

  14. Private affairs [Canon del Pato hydroelectric project

    International Nuclear Information System (INIS)

    Moxon, S.

    1997-01-01

    The privatisation of the electric power industry in Peru has caused growth in its hydroelectric generation capacity. Increased interest in hydroelectric power, based on economic considerations, had led to decision on upgrading the two main hydropower plants which will provide almost 100 MW of extra capacity over a three year period, and provide competitively priced electric power. (UK)

  15. Fish screens at hydroelectric diversions

    International Nuclear Information System (INIS)

    Ott, R.F.

    1994-01-01

    Preventing downstream migrating fish from entering the turbines at hydroelectric projects is a standard mitigation goal of state and federal fishery management agencies. The object is to minimize the adverse impacts to the fish associated with the exclusion and passage through the bypass water conveyance facilities. In the western United States, most of the fishery management agencies have fish screen design criteria that focus on the approach and transportational velocities, maximum opening dimensions of the screen material, and the cleaning standards. Recently, more attention has been given to fish behavioral traits such as attraction and sustained and darting swimming speed, which has resulted in more attention to the position of the screens to the flow and the length of time the downstream migrants are exposed to the screens. Criteria for length of time of exposure, size and position of bypass, flow and velocities in the bypass entrances, discharge requirements back into the receiving water, and exposure to predation have created unique challenges to the fish screen designer. This paper discusses some of the more recent types of fixed fish screens that are being installed at hydroelectric plants that meet these challenges

  16. Technological characterization of basaltic rocks of Canoas I Hydroelectric Power Plant, Paranapanema river, Sao Paulo - Parana states, Brazil; Caracterizacao tecnologica das rochas basalticas da Usina Hidroeletrica Canoas I, Rio Paranapanema, SP/PR

    Energy Technology Data Exchange (ETDEWEB)

    Marrano, Antonio

    1997-07-01

    Basaltic litotypes from the rock mass foundation of Canoas I Hydroelectric Power Plant were submitted to technological characterization tests, in order to verify their suitability as construction material. Physical and mechanical properties (density, porosity, water absorption, ultrasonic velocity, compressive and splitting tensile strength, among others) were determined, besides petrographic analyses. Weather ability tests were also performed, not only through wetting-drying cycles and by immersion in ethylene glycol but by outdoor exposure as well, using crushed and core drilled specimens. Detailed procedures for the weather ability test using core specimens from rotary drilling are given. It is analyzed the influence of a geological feature (fault zone, about 10 meters thick and 20 degrees dip), that occurs in the rock mass foundation, on the technological properties of these rocks. Basaltic litotypes selected as construction material are then pointed out. (author)

  17. Hydroelectric power in Romania. Past - present - future

    International Nuclear Information System (INIS)

    Bogan, V.

    1996-01-01

    This paper presents an analysis of the past and present situation in hydroelectric power (achievements, rates of commissioning and so on) and the future strategies for the hydroelectric power resource development in the conditions of a free market economy. At present the contribution of hydroelectric power in the Romania's total power balance is about 16,500 GW h/year which represents nearly 28 %. The theoretical hydroelectric power potential of Romania is 75,000 GW h/year while the technical potential, which could actually be developed, is only 40,000 GW h/year. Finally, there are presented the main directions in the hydroelectric power development up to the year 2020. (author) 3 tabs

  18. Benthic Habitat Mapping - Indian River Lagoon, Florida Submerged Aquatic Vegetation (SAV) Data 1996 Geoform

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — The NOAA Office for Coastal Management's Coastal Change Analysis Program, in cooperation with the St. Johns River and South Florida Water Management Districts, used...

  19. Benthic Habitat Mapping - Indian River Lagoon, Florida Submerged Aquatic Vegetation (SAV) Data 1996 Geodatabase

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — The NOAA Office for Coastal Management's Coastal Change Analysis Program, in cooperation with the St. Johns River and South Florida Water Management Districts, used...

  20. Benthic Habitat Mapping - Indian River Lagoon, Florida Submerged Aquatic Vegetation (SAV) Data 1996 Substrate

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — The NOAA Office for Coastal Management's Coastal Change Analysis Program, in cooperation with the St. Johns River and South Florida Water Management Districts, used...

  1. Water-Quality Monitoring and Biological Integrity Assessment in the Indian River Lagoon, Florida: Status, Trends, and Loadings (1988-1994).

    Science.gov (United States)

    Sigua; Steward; Tweedale

    2000-02-01

    / The Indian River Lagoon (IRL) system that extends from Ponce DeLeon Inlet to Jupiter Inlet is comprised of three interconnected estuarine lagoons: the Mosquito Lagoon (ML), the Banana River Lagoon (BRL), and the Indian River Lagoon (subdivided into North Indian River Lagoon, NIRL and the South Indian River Lagoon, SIRL). The declines in both the areal coverage and species diversity of seagrass communities within the IRL system are believed to be due in part to continued degradation of water quality. Large inflows of phosphorus (P) and nitrogen (N) -laden storm-water from urban areas and agricultural land have been correlated with higher chlorophyll a production in the central, south central, and the south segments of the lagoon. In a system as large and complex as the lagoon, N and P limitations are potentially subject to significant spatial and temporal variability. Total Kjeldahl nitrogen (TN) was higher in the north (1.25 mg/liter) and lower in the south (0.89 mg/liter). The reverse pattern was observed for total P (TP), i.e., lowest in the north (0.03 mg/liter) and highest at the south (0.14 mg/liter) ends of the IRL. This increased P concentration in the SIRL appears to have a significantly large effect on chlorophyll a production compared with the other segments, as indicated by stepwise regression statistics. This relationship can be expressed as follows: South IRL [chlorophyll a] = -8.52 + 162.41 [orthophosphate] + 7.86 [total nitrogen] + 0.38 [turbidity]; R(2) = 0.98**.

  2. Fluvial Export Variability Of Limiting Nutrient Fluxes To The Indian Ocean From Kelani, Kalu and Gin Rivers Of Sri Lanka

    Science.gov (United States)

    Ranasinghage, P. N.; Silva, A. N.; Vlahos, P.

    2016-12-01

    Inorganic `reactive' nutrients hold the highest importance in understanding the role of limiting nutrients in the ocean since they facilitate marine biological productivity and carbon sequestration that would eventually pave the way to regulate the biogeochemical climate feedbacks. Significant inorganic fractions are expected to be exported episodically to the ocean from fluvial fluxes though this is poorly understood. Thus, no considerable amounts of published work regarding the fluxes from Sri Lankan freshwater streams have ever been recorded. A study was carried out to quantify the contribution of Kelani, Kalu and Gin Rivers, three major rivers in the wet zone of Sri Lanka, in exporting major limiting nutrient fluxes to the Indian Ocean; to understand the significance of their variability patterns with rainfall and understand differences in their inputs. The study was conducted during the summer monsoonal period from late August to early November at two-three week intervals where water samples were collected for ammonia, nitrite, nitrate, orthophosphate, silica, sulfate and iron analysis by Colorimetric Spectroscopy. Discharge and rainfall data were retrieved from the Department of Irrigation and Department of Meteorology, Sri Lanka respectively. According to Two Way ANOVA, none of the individual fluxes showed significant differences (p>0.1) both in their temporal and spatial variability suggesting that studied rivers respond similarly in fluvial transportation owing to the similar rainfall intensities observed during the study period in the wet zone. Linear Regression Analysis indicates that only PO43- (p<0.01), SO42- (p<0.01) and NO2-(p<0.01 for Kelani and Kalu; 0.0.1Key words; nutrients, fluvial, fluxes, Redfield ratios

  3. Presentation plan of the reconstruction and upgrade hydroelectric power plant 'Zvornik'

    Directory of Open Access Journals (Sweden)

    Krstić Dušan B.

    2016-01-01

    Full Text Available By the basic project of the energy utilization of the middle part of the river Drina (from Višegrad to Zvornik building of five large hydroelectric power plants was planned. Hydroelectric power plant near Zvornik had the greatest advantage, and it is the first built. Hydroelectric power plant 'Zvornik' separates the river Drina, about 1 km upstream from Mali Zvornik in Serbia and Zvornik in Bosnia and Herzegovina. In order to extend the work life, by the urban development project was planned modernization of production aggregates and associated equipment, the upgrade of annexes above the aggregate siphons A1 and A2, as well as the upgrade of the annexes of the powerhouse on the right bank of the river in the function of accommodation of electrical equipment. By replacing of the vital parts of turbines with increasing diameter with an increase of efficiency, Bow and power, as well as replacing generators with new generator of higher power with excitation and all the necessary auxiliary equipment, will ensure reliable operation of the hydroelectric power plant and will extend the working life of the next 40 years, creating opportunities for retrofitting additional fifth unit.

  4. The macroinvertebrates of the Cunene River from the Ruacana Falls ...

    African Journals Online (AJOL)

    The proposed construction of a second hydroelectric power-generating dam on the Cunene (Kunene) River on the Namibia-Angola border, more than 100km downstream of the Ruacana hydroelectric power plant, will have a major influence on the aquatic biota of this river. In order to assess the potential impact of this ...

  5. A modelling methodology for assessing the impact of climate variability and climatic change on hydroelectric generation

    International Nuclear Information System (INIS)

    Munoz, J.R.; Sailor, D.J.

    1998-01-01

    A new methodology relating basic climatic variables to hydroelectric generation was developed. The methodology can be implemented in large or small basins with any number of hydro plants. The method was applied to the Sacramento, Eel and Russian river basins in northern California where more than 100 hydroelectric plants are located. The final model predicts the availability of hydroelectric generation for the entire basin provided present and near past climate conditions, with about 90% accuracy. The results can be used for water management purposes or for analyzing the effect of climate variability on hydrogeneration availability in the basin. A wide range of results can be obtained depending on the climate change scenario used. (Author)

  6. The hydroelectric power market in the world

    International Nuclear Information System (INIS)

    Junius, A.

    2004-10-01

    This work makes a synthesis of the hydroelectric power market, of its present day capacity in the world, and of its perspectives of development in the future. The first part treats of the hydroelectric facilities and of the market of hydroelectric power plants. It presents the technology used and the different types of plants, the evolution of their geographical setting and the future potentialities of development. The second part deals with the competitiveness of this industry with respect to: the energy policy stakes, the profitability, the energy independence of countries, the regulation of power networks and the environmental impacts. (J.S.)

  7. Small hydroelectric power stations and their reality

    International Nuclear Information System (INIS)

    Kamenski, Miroslav

    1999-01-01

    Construction of a small hydroelectric power station provides additional amounts of electric energy, engages a private capital, revives investment activities and promotes the use of renewable energy sources. Transmission losses are reduced, a voltage of higher quality is achieved and idle power is compensated by the generation of electricity in the small hydroelectric power stations and at the place of consumption. Legislation and technical regulations, however, require a multidisciplinary approach, defining of complex spaces and environmental protection. Unfortunately, complete documents should be prepared for small,hydroelectric plants just as for big ones what is a long procedure and many of those papers are unnecessary or even superfluous. (Author)

  8. Hydroelectricity and ecological considerations. Falsification of the environmental reality by the opponents of hydropower

    Directory of Open Access Journals (Sweden)

    Andrzej Giziński

    2013-09-01

    Full Text Available Opponents of hydroelectricity claim falsely that hydrotechnical development of the Lower Vistula River constitutes implementation of Edward Gierek’s concept of bringing only environmental damage1. Statements on the negative environmental impact of constructing small hydroelectric power stations (SHPS are equally groundless. Permanent protests against the construction of dams and river damming, regardless of the motivations and will of protesters, increase energy dependence on Russia, and preserves the poor, post-Bierut hydrological situation2. The main fallacy made by hydropower opponents is the alternative treatment of power and environmental purposes. Environmental errors consist in continuous omission of even the most obvious positive ecological effects of constructing river dams and – what is especially reprehensible – inventing non-existent threats, e.g. lethal concentration of toxic heavy metals in deposits of the Włocławek Reservoir or the detrimental impact of warming up water in stage of falls on the fish population below the dam.

  9. Public choice in water resource management: two case studies of the small-scale hydroelectric controversy

    Energy Technology Data Exchange (ETDEWEB)

    Soden, D.L.

    1985-01-01

    Hydroelectric issues have a long history in the Pacific Northwest, and more recently have come to focus on developing environmentally less-obtrusive means of hydroelectric generation. Small-scale hydroelectric represents perhaps the most important of these means of developing new sources of renewable resources to lessen the nation's dependence on foreign sources of energy. Each potential small-scale hydroelectric project, however, manifests a unique history which provides a highly useful opportunity to study the process of collective social choice in the area of new energy uses of water resources. Utilizing the basic concepts of public choice theory, a highly developed and increasingly widely accepted approach in the social sciences, the politicalization of small-scale hydroelectric proposals is analyzed. Through the use of secondary analysis of archival public opinion data collected from residents of the State of Idaho, and through the development of the two case studies - one on the Palouse River in Eastern Washington and the other at Elk Creek Falls in Northern Idaho, the policy relevant behavior and influence of major actors is assessed. Results provide a useful test of the utility of public-choice theory for the study of cases of natural-resources development when public involvement is high.

  10. Indian energy sources in 1980's

    Science.gov (United States)

    Chaturvedi, A. C.

    Indian energy sources for electrical power generation are surveyed with a view to the development of the available hydroelectric resources. The capital-intensive nature of hydroelectric projects and their long gestation periods have impeded the rapid exploitation of the hydroelectric resources in the country, which are expected to provide 37% of the 16,200 MW capacity anticipated by 2001. Alternative sources of power such as solar and wind energy, biogas conversion and the use of industrial waste heat to produce electricity are discussed with case studies presented.

  11. Improvements for conventional clean energies: hydroelectric power

    International Nuclear Information System (INIS)

    Henry, P.

    1991-01-01

    Hydro-electric energy offers considerable possibilities and advantages which should be exploited before considering the construction of power which use fossil fuels. In fact: - hydro-electric is the only renewable energy available in very large quantities at competitive prices, - there are still many possibilities for producing it since at present only 14% is exploited, - hydraulic machines have been considerably improved over recent years, - the improvements make it possible to use watercourses in successive stages thus considerably reducing damage to the environment, - hydro-electric installations have a regulating effect, - vast areas of uncultivated land can be irrigated using the water reserves created by the artificial lakes. All these reasons favour intensive exploitation of hydro-electric energy reserves, in spite of the initial investment costs, which are sometimes higher than those for constructing fuel/driven power stations. (author) 9 figs., 1 tab., 3 refs

  12. Hydroelectric power is green, although controversial

    International Nuclear Information System (INIS)

    Schulp, A.

    2003-01-01

    Hydroelectric power is worldwide the most important source of renewable energy. Still, it has some controversial aspects, which are briefly discussed in this article, focusing on Belgium and the Netherlands [nl

  13. Greenhouse gas emissions from hydroelectric reservoirs

    International Nuclear Information System (INIS)

    Rosa, L.P.; Schaeffer, R.

    1994-01-01

    In a recent paper, Rudd et al. have suggested that, per unit of electrical energy produced, greenhouse-gas emissions from some hydroelectric reservoirs in northern Canada may be comparable to emissions from fossil-fuelled power plants. The purpose of this comment is to elaborate these issues further so as to understand the potential contribution of hydroelectric reservoirs to the greenhouse effect. More than focusing on the total budget of carbon emissions (be they in the form of CH 4 or be they in the form of CO 2 ), this requires an evaluation of the accumulated greenhouse effect of gas emissions from hydroelectric reservoirs and fossil-fuelled power plants. Two issues will be considered: (a) global warming potential (GWP) for CH 4 ; and (b) how greenhouse-gas emissions from hydroelectric power plants stand against emissions from fossil-fuelled power plants with respect to global warming

  14. The environment and the hydroelectric in Amazonia

    International Nuclear Information System (INIS)

    La Rovere, E.L.

    1992-01-01

    Some aspects about social and environmental impacts due to the hydroelectric power plants constructed in Amazonia region are presented, including considerations of energy planning and management with international example. (C.G.C.)

  15. Differential Rate of Deforestation in Two Adjoining Indian River Basins: Does Resource Availability Matters?

    Science.gov (United States)

    Das, P.; Behera, M. D.

    2017-12-01

    Deforestation is one of the key factors of global climate change by altering the surface albedo reduces the evapotranspiration and surface roughness leads to warming in tropical regions. River basins are always subjected to LULC changes, especially decline in forest cover to give way for agricultural expansion, urbanisation, industrialisation etc. We generated LULC maps at three decadal intervals i.e., 1985, 1995 and 2005 in two major river basins of India using Landsat data employing on-screen visual image interpretation technique. In Rain-fed, Mahanadi river basin (MRB), 30.64% forest cover in 1985 was reduced to 30.13% in 2005, wherein glacier-fed, Brahmaputra river basin (BRB) this change was 63.44% to 62.32% during 1985 to 2005. Though conversion of forest land for agricultural activities was the major LULC changes in both the basins, the rate was more than two times higher in BRB than MRB. Scrub land in few zones acted as an intermediate class for mixed forest conversion to cropland land in both the basins. Analysing the drivers, in deforestation we observed the proximity zones around habitat and socio-economic drivers contributed higher compared to topographic, edaphic and climate. Using Dyna-CLUE modelling approach, we have predicted the LULC for 2025. For validation, comparing the predicted result with actual LULC of 2005, we obtained > 97% modeling accuracy; therefore it is expected that the Dyna-CLUE model has very well predicted the LULC for the year 2025. The predicted LULC of 2025 captured the similar trend of deforestation around 0.52% in MRB and 1.18% in BRB during 2005 to 2025. Acting as early warning, and with the past 2-decadal change analysis this study is believed to help the land use planners for improved regional planning to create balanced ecosystem, especially in a changing climate. On the basis of driver analysis, we believe that availability of more forest resources in Brahmaputra River basin provided extra liberty for higher

  16. Decentralized planning of hydroelectric power systems

    International Nuclear Information System (INIS)

    Binato, S.; Pereira, M.V.F.

    1995-01-01

    This paper discusses the application of marginal cost concepts to the expansion planning of hydroelectric systems. It is shown that the renumeration of hydroelectric plants should not be based on their energy production, as this leads to excessive revenues for the plant owner, and distorts the dimensioning of upstream reservoirs. In order to produce the adequate economic signals, it is necessary to separate the contributions of turbines and reservoirs. Examples from the Brazilian power system are presented and discussed

  17. Increase of hydroelectric power plant operation reliability

    International Nuclear Information System (INIS)

    Koshumbaev, M.B.

    2006-01-01

    The new design of the turbine of hydroelectric power plant (HPP) is executed in the form of a pipe with plates. Proposed solution allows increasing the hydroelectric power plant capacity at existing head and water flow. At that time the HPP turbine reliability is increase, its operation performances are improving. Design efficiency is effective mostly for small-scale and micro-HPP due to reliable operation, low-end technology, and harmless ecological application. (author)

  18. Status Review of Wildlife Mitigation, Columbia Basin Hydroelectric Projects, Washington Facilities (Intrastate) Final Report.

    Energy Technology Data Exchange (ETDEWEB)

    Howerton, Jack

    1984-11-01

    This report was prepared for BPA in fulfillment of section 1004 (b)(1) of the Pacific Northwest Electric Power Planning and Conservation Act of 1980, to review the status of past, present, and proposed future wildlife planning and mitigation program at existing hydroelectric projects in the Columbia River Basin. The project evaluations will form the basis for determining any needed remedial measures or additional project analysis. Projects addressed are: Merwin Dam; Swift Project; Yale Project; Cowlitz River; Boundary Dam; Box Canyon Dam; Lake Chelan; Condit Project; Enloe Project; Spokane River; Tumwater and Dryden Dam; Yakima; and Naches Project.

  19. Plants of restricted use indicated by three cultures in Brazil (Caboclo-river dweller, Indian and Quilombola).

    Science.gov (United States)

    Rodrigues, Eliana

    2007-05-04

    A detailed record of plants cited during ethnopharmacological surveys, suspected of being toxic or of triggering adverse reactions, may be an auxiliary means to pharmacovigilance of phytomedicines, in that it provides greater knowledge of a "bad side" to plant resources in the Brazilian flora. This study describes 57 plant species of restricted use (abortive, contraceptive, contraindicated for pregnancy, prescribed in lesser doses for children and the elderly, to easy delivery, in addition to poisons to humans and animals) as indicated during ethnopharmacological surveys carried out among three cultures in Brazil (Caboclos-river dwellers, inhabitants of the Amazon forest; the Quilombolas, from the pantanal wetlands; the Krahô Indians, living in the cerrado savannahs). These groups of humans possess notions, to a remarkable extent, of the toxicity, contraindications, and interaction among plants. A bibliographical survey in the Pubmed, Web of Science and Dr. Duke's Phytochemical and Ethnobotanical Databases has shown that 5 out of the 57 species have some toxic properties described up to the present time, they are: Anacardium occidentale L. (Anacardiaceae), Brosimum gaudichaudii Trécul (Moraceae), Senna alata (L.) Roxb. (Fabaceae), Senna occidentalis (L.) Link (Fabaceae), Strychnos pseudoquina A. St.-Hil. (Loganiaceae) and Vernonia brasiliana (L.) Druce (Asteraceae).

  20. The changing hydro-ecological dynamics of rivers and deltas of the Western Indian Ocean: Anthropogenic and environmental drivers, local adaptation and policy response

    Science.gov (United States)

    Duvail, Stéphanie; Hamerlynck, Olivier; Paron, Paolo; Hervé, Dominique; Nyingi, Wanja D.; Leone, Michele

    2017-10-01

    The rivers flowing into the Western Indian Ocean have steep headwater gradients and carry high sediment loads. In combination with strong tides and seasonal rainfall, these rivers create dynamic deltas with biodiversity-rich and productive ecosystems that, through flooding, have sustained indigenous use systems for centuries. However, river catchments are rapidly changing due to deforestation. Hydropower dams also increasingly alter flood characteristics, reduce sediment supply and contribute to coastal erosion. These impacts are compounded by climate change. Altogether, these changes affect the livelihoods of the delta users. Here, based on prior works that we and others have conducted in the region, we analyse the drivers of these hydro-ecological changes. We then provide recommendations for improved dam design and operations to sustain the underlying delta-building processes, the ecosystem values and the needs of the users.

  1. Hydroelectricity, an opportunity to grab?

    International Nuclear Information System (INIS)

    Yergeau, M.

    1997-01-01

    The deregulation within the electricity sector and the government''s project approval process were discussed. Deregulation was meant to simplify trade while providing consumers with a fair price, quality service and end-product quality. Proposals for large hydroelectric projects, however, must still be authorized by the government. The environmental assessment process for projects involving energy transmission infrastructures is long and complicated. All of Hydro-Quebec''s recent large projects were challenged in court. While energy market players need environmentally credible generating schemes, there appears to be nothing on the horizon to suggest that the approval process is going to be made easier soon. Indeed, there is every reason to believe that recent gains in environmental and social protection will not be sold off to ease the burden on utility companies to prove their case before construction. The choice is between speed and quality in matters of authorization, and while every effort should be made to combine the two, when it comes down to a choice, there should be no question as to what must be preserved. 2 figs

  2. Estimated Flood-Inundation Mapping for the Upper Blue River, Indian Creek, and Dyke Branch in Kansas City, Missouri, 2006-08

    Science.gov (United States)

    Kelly, Brian P.; Huizinga, Richard J.

    2008-01-01

    In the interest of improved public safety during flooding, the U.S. Geological Survey, in cooperation with the city of Kansas City, Missouri, completed a flood-inundation study of the Blue River in Kansas City, Missouri, from the U.S. Geological Survey streamflow gage at Kenneth Road to 63rd Street, of Indian Creek from the Kansas-Missouri border to its mouth, and of Dyke Branch from the Kansas-Missouri border to its mouth, to determine the estimated extent of flood inundation at selected flood stages on the Blue River, Indian Creek, and Dyke Branch. The results of this study spatially interpolate information provided by U.S. Geological Survey gages, Kansas City Automated Local Evaluation in Real Time gages, and the National Weather Service flood-peak prediction service that comprise the Blue River flood-alert system and are a valuable tool for public officials and residents to minimize flood deaths and damage in Kansas City. To provide public access to the information presented in this report, a World Wide Web site (http://mo.water.usgs.gov/indep/kelly/blueriver) was created that displays the results of two-dimensional modeling between Hickman Mills Drive and 63rd Street, estimated flood-inundation maps for 13 flood stages, the latest gage heights, and National Weather Service stage forecasts for each forecast location within the study area. The results of a previous study of flood inundation on the Blue River from 63rd Street to the mouth also are available. In addition the full text of this report, all tables and maps are available for download (http://pubs.usgs.gov/sir/2008/5068). Thirteen flood-inundation maps were produced at 2-foot intervals for water-surface elevations from 763.8 to 787.8 feet referenced to the Blue River at the 63rd Street Automated Local Evaluation in Real Time stream gage operated by the city of Kansas City, Missouri. Each map is associated with gages at Kenneth Road, Blue Ridge Boulevard, Kansas City (at Bannister Road), U.S. Highway 71

  3. 78 FR 44590 - Salt River Pima-Maricopa Indian Community-Amendment to Alcoholic Beverage Control Ordinance

    Science.gov (United States)

    2013-07-24

    ...: Sharlot Johnson, Tribal Government Services Officer, Western Regional Office, Bureau of Indian Affairs... Springer, Office of Indian Services, Bureau of Indian Affairs, 1849 C Street NW., MS-4513-MIB, Washington... (40) ounces of beer, one (1) liter of wine or four (4) ounces of distilled spirits in any alcoholic...

  4. Field screening of water quality, bottom sediment, and biota associated with irrigation drainage in and near Walker River Indian Reservation, Nevada 1994-95

    Science.gov (United States)

    Thodal, Carl E.; Tuttle, Peter L.

    1996-01-01

    A study was begun in 1994 to determine whether the quality of irrigation drainage from the Walker River Indian Reservation, Nevada, has caused or has potential to cause harmful effects on human health or on fish and wildlife, or may adversely affect the suitability of the Walker River for other beneficial uses. Samples of water, bottom sediment, and biota were collected during June-August 1994 (during a drought year) from sites upstream from and on the Walker River Indian Reservation for analyses of trace elements. Other analyses included physical characteristics, major dissolved constituents, selected species of water-soluble nitrogen and phosphorus, and selected pesticides in bottom sediment. Water samples were collected again from four sites on the Reservation in August 1995 (during a wetterthan- average year) to provide data for comparing extreme climatic conditions. Water samples collected from the Walker River Indian Reservation in 1994 equaled or exceeded the Nevada water-quality standard or level of concern for at least one of the following: water temperature, pH, dissolved solids, unionized ammonia, phosphate, arsenic, boron, chromium, lead, and molybdenum; in 1995, only a single sample from one site exceeded a Nevada water-quality standard for molybdenum. Levels of concern for trace elements in bottom sediment collected in 1994 were equaled or exceeded for arsenic, iron, manganese, and zinc. Concentrations of organochiorine pesticide residues in bottom sediment were below analytical reporting limits. Levels of concern for trace-elements in samples of biota were equaled or exceeded for arsenic, boron, copper, and mercury. Results of toxicity testing indicate that only water samples from Walker Lake caused a toxic response in test bacteria. Arsenic and boron concentrations in water, bottom sediment, and biological tissue exceeded levels of concern throughout the Walker River Basin, but most commonly in the lower Walker River Basin. Mercury also was elevated

  5. A description and assessment of the Atlantic salmon (salmo salar) fall pre-smolt migration in relation to the Tobique narrows hydroelectric facility, Tobique River, New Brunswick using radio telemetry

    International Nuclear Information System (INIS)

    Jones, R.A.; Flanagan, J.J.

    2007-01-01

    Atlantic salmon (salmo salar) smolts typically migrate to the ocean in the spring following 2 to 4 years in freshwater. However, in some rivers, migration can also begin in the fall for a small component of the population of known as pre-smolts. These fish do not complete their migration to the ocean in the fall, but rather remain in freshwater, closer to the marine environment, until the following spring when they complete their migration. This report presented the results of a collaborative research project between New Brunswick Power Commission, Fisheries and Oceans Canada, Atlantic Salmon Federation, University of New Brunswick and the Tobique Salmon Protective Association that utilized radio telemetry to study the spatial and temporal movements of fall migrating, wild Atlantic salmon pre-smolts in the upstream and downstream vicinities of the Tobique Narrows Dam. In order to provide an estimation of the fall pre-smolt population migrating from the Tobique River, rotary screw traps were used along with a mark recapture method. It was hoped that the results from this radio tagging experiment would facilitate the establishment of an effective downstream fish passage and/or collection strategies for juvenile salmon. The report described the study area; Tobique Narrows Dam; catches and estimates; radio tagging; fixed radio receivers; and searches. Results were presented for catches and estimates; migration to Arthurette; migration to Tobique Narrows Dam; operating conditions at Tobique Narrows Dam; estimated numbers of pre-smolts up river and down river of the Tobique Narrows Dam; and migration to Beechwood Dam. Recommendations and considerations for future evaluations or research were also presented. 29 refs., 8 tabs., 18 figs., 3 appendices

  6. Impacts of the Garafiri hydroelectric dam on the Konkoure estuary

    International Nuclear Information System (INIS)

    Samoura, K.; Waaub, J.P.

    2008-01-01

    This article described the environmental impacts caused by the exploitation of one or several dams in tropical coastal basins. In particular, it proposed a methodological approach for analyzing the vulnerability of ecosystems to modifications caused by the exploitation of the Garafiri hydroelectric dam in Guinea. With an installed power capacity of 75 MW, this dam has been operational since 1999 and has supplied electricity to coastal and mid Guinea since 2000. Since then, the ecosystem of the Konkoure River has undergone important changes. This study focused primarily on impacts during the dry season. Data was collected at different hydroelectric stations along the Konkoure Basin to estimate changes in water flow in the estuary. The study showed several changes, including noticeable impacts on the soil salt content. In addition, changes in vegetation were attributed to changes in soil content. The study revealed that rice production has increased 65 per cent since 2000, while salt exploitation has been completely discontinued. It was concluded that the hydraulic management of the dam can have a significant impact on the region's ecosystem which can in turn influence ecological and social economic functions. It was concluded that the vulnerability of the ecosystem can be worsened in the context of climate change. 25 refs., 9 figs

  7. Water-quality monitoring and biological integrity assessment in the Indian River Lagoon, Florida: Status, trends, and loadings (1988--1994)

    Energy Technology Data Exchange (ETDEWEB)

    Sigua, G.C.; Steward, J.S.; Tweedale, W.A.

    2000-02-01

    The Indian River Lagoon (IRL) system that extends from Ponce DeLeon inlet to Jupiter inlet is comprised of three interconnected estuarine lagoons: The Mosquito Lagoon (ML), the Banana River Lagoon (BRL), and the Indian River Lagoon. The declines in both the aerial coverage and species diversity of seagrass communities within the IRL system are believed to be due in part to continued degradation of water quality. Large inflows of phosphorus (P) and nitrogen (N)-laden storm-water from urban areas an agricultural land have been correlated with higher chlorophyll a production in the central, south central, and the south segments of the lagoon. In a system as large and complex as the lagoon, N and P limitations are potentially subject to significant spatial and temporal variability. Total Kjeidahl nitrogen (TN) was higher in the north and lower in the south. The reverse pattern was observed for total P (TP), i.e., lowest in the north and highest at the south ends of the IRL. This increased P concentration in the SIRL appears to have a significantly large effect on chlorophyll a production compared with the other segments, as indicated by stepwise regression statistics. This relationship can be expressed as follows: South IRL [chlorophyll a] = {minus}8.52 + 162.41 [orthophosphate] + 7.86 [total nitrogen] + 0.38 [turbidity]; R{sup 2} = 0.98**.

  8. [The mosquito fauna (Diptera: Culicidae) of the environs of the Sayan-Shushenskoe hydroelectric power station].

    Science.gov (United States)

    Gornostaeva, R M

    1999-01-01

    Among females and larvae of mosquitoes collected in 1969, 1981-1984 in the area of the Sayan-Shushenskoe hydroelectric power station (140 km up the Yenisei River from the Abakan city) 5 genera and 30 species were recorded. Based on recent collections and reference data (Gornostaeva e. a., 1969; Gornostaeva, Danilov, 1986) the fauna of the region in question includes 31 species of mosquitoes (Anopheles--1, Culiseta--2, Coquillettidia--1, Aedes--22, Culex--5).

  9. Electric rivers

    International Nuclear Information System (INIS)

    McCutcheon, S.

    1992-04-01

    James Bay II, the projected Canadian hydroelectric power plant of gigantic dimensions, is to deliver its electricity to Europe: in the USA, opposition to power imports from James Bay is growing. Its realization means the flooding of an area as big as the Federal Republic of Germany; the native territory and hunting grounds of the Cree indians would be inundated. The interests of the European power industry in the James Bay project and the consequences for Europe are described in an appendix (EQHHPP project, project management Hydro-Quebec and Ludwig Boelkow Foundation, hydrogen production through electrolysis, methods for transporting hydrogen to Hamburg). (orig./HP) [de

  10. Carbon emission as a function of energy generation in hydroelectric reservoirs in Brazilian dry tropical biome

    International Nuclear Information System (INIS)

    Ometto, Jean P.; Cimbleris, André C.P.; Santos, Marco A. dos; Rosa, Luiz P.; Abe, Donato; Tundisi, José G.; Stech, José L.; Barros, Nathan; Roland, Fábio

    2013-01-01

    Most energy generation globally is fueled by coal and oil, raising concerns about greenhouse gas emissions. Hydroelectric reservoirs are anthropogenic aquatic systems that occur across a wide geographical extent, and, in addition to their importance for energy production, they have the potential to release two important greenhouse gases (GHGs), carbon dioxide and methane. We report results from an extensive study of eight hydroelectric reservoirs located in central and southeastern tropical Brazil. In the Brazilian dry tropical biome reservoirs, emissions (in tons of CO 2 Eq. per MW h) varied from 0.01 to 0.55, and decreased with reservoir age. Total emissions were higher in the reservoir lake when compared to the river downstream the dam; however, emissions per unit area, in the first kilometer of the river after the dam, were higher than that in the reservoir. The results showed, despite higher carbon emissions per energy production in the youngest reservoirs, lower emission from hydroelectric reservoirs from the studied region in relation to thermo electrical supply, fueled by coal or fossil fuel. The ratio emission of GHG per MWh produced is an important parameter in evaluating the service provided by hydroelectric reservoir and for energy planning policies. - Highlights: ► Hydroelectric reservoirs construction is growing worldwide. ► The effect of hydropower reservoir in the carbon cycle is dependent on environment characteristics. ► Carbon emissions per energy production are higher in the youngest tropical savannah reservoirs. ► Methane emissions decrease with reservoir age in tropical savannah reservoirs. ► In general, the effect of hydropower in the carbon cycle is lower than other energy sources

  11. Untreated urban waste contaminates Indian river sediments with resistance genes to last resort antibiotics.

    Science.gov (United States)

    Marathe, Nachiket P; Pal, Chandan; Gaikwad, Swapnil S; Jonsson, Viktor; Kristiansson, Erik; Larsson, D G Joakim

    2017-11-01

    Efficient sewage treatment is critical for limiting environmental transmission of antibiotic-resistant bacteria. In many low and middle income countries, however, large proportions of sewage are still released untreated into receiving water bodies. In-depth knowledge of how such discharges of untreated urban waste influences the environmental resistome is largely lacking. Here, we highlight the impact of uncontrolled discharge of partially treated and/or untreated wastewater on the structure of bacterial communities and resistome of sediments collected from Mutha river flowing through Pune city in India. Using shotgun metagenomics, we found a wide array (n = 175) of horizontally transferable antibiotic resistance genes (ARGs) including carbapenemases such as NDM, VIM, KPC, OXA-48 and IMP types. The relative abundance of total ARGs was 30-fold higher in river sediments within the city compared to upstream sites. Forty four ARGs, including the tet(X) gene conferring resistance to tigecycline, OXA-58 and GES type carbapenemases, were significantly more abundant in city sediments, while two ARGs were more common at upstream sites. The recently identified mobile colistin resistance gene mcr-1 was detected only in one of the upstream samples, but not in city samples. In addition to ARGs, higher abundances of various mobile genetic elements were found in city samples, including integron-associated integrases and ISCR transposases, as well as some biocide/metal resistance genes. Virulence toxin genes as well as bacterial genera comprising many pathogens were more abundant here; the genus Acinetobacter, which is often associated with multidrug resistance and nosocomial infections, comprised up to 29% of the 16S rRNA reads, which to our best knowledge is unmatched in any other deeply sequenced metagenome. There was a strong correlation between the abundance of Acinetobacter and the OXA-58 carbapenemase gene. Our study shows that uncontrolled discharge of untreated urban

  12. Evaluation of natural radioactivity and its associated health hazard indices of a South Indian river

    International Nuclear Information System (INIS)

    Krishnamoorthy, N.; Mullainathan, S.; Mehra, R.; Chaparro, Marcos A.E.; Chaparro, Mauro A.E.

    2014-01-01

    The activity concentration of the natural radionuclides 226 Ra, 232 Th and 40 K was measured for sediment samples collected from thirty-three different locations along the Bharathapuzha river basin by using high-resolution gamma-ray spectrometry. The concentrations of the natural radionuclides were found to vary from location to location, and their mean values are 19.6, 82.87 and 19.44 % higher than the worldwide mean values of 226 Ra, 232 Th and 40 K, respectively. The value of 232 Th was found to be higher than that of 226 Ra in 82 % of the samples collected for this study. The calculated values of indoor gamma dose rate (D IN ) ranged between 89.55 and 194.24 nGy h -1 , and the overall mean value is 63.2 % higher than the recommended safe and criterion limit by UNSCEAR. The internal and external hazard indices (H in and H ex ), the representative gamma index and alpha index (I gamma and I alpha ), the annual gonad dose equivalent (AGDE) and the excess lifetime cancer risk (ELCR) were also calculated and compared with the international recommended values. Multivariate statistical analyses were also carried out to determine the relation between the natural radionuclides and various radiological parameters. (authors)

  13. Aquatic biology and hydroelectric power development in New Zealand

    National Research Council Canada - National Science Library

    Henriques, P. R

    1987-01-01

    .... The first section summarizes the country's hydroelectric resources and their utilization. The legal and planning framework associated with hydroelectric power development and the environment is covered in the second section...

  14. 76 FR 75543 - Missisquoi River Technologies; Missisquoi River Hydro LLC; Notice of Transfer of Exemption

    Science.gov (United States)

    2011-12-02

    ..., Missisquoi River Technologies informed the Commission that its exemption from licensing for the North Troy..., located at 453 East Hill Rd., Middlesex, VT 05602, is now the exemptee of the North Troy Hydroelectric...

  15. Characteristics of water, sediment, and benthic communities of the Wolf River, Menominee Indian Reservation, Wisconsin, water years 1986-98

    Science.gov (United States)

    Garn, Herbert S.; Scudder, Barbara C.; Richards, Kevin D.; Sullivan, Daniel J.

    2001-01-01

    Analyses and interpretation of water quality, sediment, and biological data from water years 1986 through 1998 indicated that land use and other human activities have had only minimal effects on water quality in the Wolf River upstream from and within the Menominee Indian Reservation in northeastern Wisconsin. Relatively high concentrations of calcium and magnesium (natural hardness), iron, manganese, and aluminum were measured in Wolf River water samples during water years 1986?98 from the three sampled sites and attributed to presence of highly mineralized geologic materials in the basin. Average calcium and magnesium concentrations varied from 22?26 milligrams per liter (mg/L) and 11?13 mg/L, respectively. Average iron concentrations ranged from 290?380 micrograms per liter (?g/L); average manganese concentrations ranged from 53?56 mg/L. Average aluminum concentrations ranged from 63?67 ?g/L. Mercury was present in water samples but concentrations were not at levels of concern. Levels of Kjeldahl nitrogen, ammonia, nitrite plus nitrate, total phosphorus, and orthophosphorus in water samples were often low or below detection limits (0.01? 0.10 mg/L). Trace amounts of atrazine (maximum concentration of 0.031 ?g/L), deethylatrazine (maximum 0.032 ?g/L), and alachlor (maximum of 0.002 ?g/L) were detected. Low concentrations of most trace elements were found in streambed sediment. Tissues of fish and aquatic invertebrates collected once each year from 1995 through 1998 at the Langlade and Keshena sites, near the northern and southern boundaries of the Reservation, respectively, were low in concentrations of most trace elements. Arsenic and silver in fish livers from both sites were less than or equal to 2 ?g/g arsenic and less than 1 ?g/g silver for dry weight analysis, and concentrations of antimony, beryllium, cadmium, cobalt, lead, nickel, and uranium were all below detection limits (less than 1 ?g/g dry weight). Concentrations of most other trace elements in fish

  16. The implantation process of oral health services in indian communities of the rivers Tiquié and Uaupés – special indian sanitary district for the Alto Rio Negro – Amazonas

    Directory of Open Access Journals (Sweden)

    Selma Aparecida Chaves NUNES

    2013-12-01

    Full Text Available This study reconstitutes the implantation process of oral health services in Indian communities of the rivers Tiquié and Uaupés – Special Indian Sanitary District for the Alto Rio Negro – Amazons. In the political, administrative, anthropological and socioeconomic context, it aims at identifying its contribution to the organization of basic attention in oral health and its reflexes in the assistance provided. The reality in the realm of contracts 439/99 and 2349/00 is established as a recut, celebrated between Fundação Nacional de Saúde and the Associação Saúde Sem Limites in the period of 2000 – 2001 which object is the organization of health services in the Tiquié and Uaupés rivers area, in the implantation process context at the Rio Negro’s Special Indian Sanitary District. It reveals the strategical dimension of establishing, in the field of organization and operation of the services, the guiding principles of Unique Health System. It points out, as fundamental in the oral health basic attention, the local planning, with emphasis in a greater visualization of life reality of the local population. Its daily practice reflects the restrictions regarding the political, technical and administrative sectors in order to define projects propose intervention mechanisms, allocate and manage the existing resources and the potential ones including human resources. It is necessary that the managers assume the challenges of power, work and knowledge relations between the population and the professionals and among different groups of these segments.

  17. Evaluation of TRMM rainfall estimates over a large Indian river basin (Mahanadi

    Directory of Open Access Journals (Sweden)

    D. Kneis

    2014-07-01

    Full Text Available The paper examines the quality of satellite-based precipitation estimates for the lower Mahanadi River basin (eastern India. The considered data sets known as 3B42 and 3B42-RT (version 7/7A are routinely produced by the tropical rainfall measuring mission (TRMM from passive microwave and infrared recordings. While the 3B42-RT data are disseminated in real time, the gauge-adjusted 3B42 data set is published with a delay of some months. The quality of the two products was assessed in a two-step procedure. First, the correspondence between the remotely sensed precipitation rates and rain gauge data was evaluated at the sub-basin scale. Second, the quality of the rainfall estimates was assessed by analysing their performance in the context of rainfall–runoff simulation. At sub-basin level (4000 to 16 000 km2 the satellite-based areal precipitation estimates were found to be moderately correlated with the gauge-based counterparts (R2 of 0.64–0.74 for 3B42 and 0.59–0.72 for 3B42-RT. Significant discrepancies between TRMM data and ground observations were identified at high-intensity levels. The rainfall depth derived from rain gauge data is often not reflected by the TRMM estimates (hit rate 80 mm day-1. At the same time, the remotely sensed rainfall rates frequently exceed the gauge-based equivalents (false alarm ratios of 0.2–0.6. In addition, the real-time product 3B42-RT was found to suffer from a spatially consistent negative bias. Since the regionalisation of rain gauge data is potentially associated with a number of errors, the above results are subject to uncertainty. Hence, a validation against independent information, such as stream flow, was essential. In this case study, the outcome of rainfall–runoff simulation experiments was consistent with the above-mentioned findings. The best fit between observed and simulated stream flow was obtained if rain gauge data were used as model input (Nash–Sutcliffe index of 0.76–0.88 at

  18. Sadhana | Indian Academy of Sciences

    Indian Academy of Sciences (India)

    Home; Journals; Sadhana. NEENA ISAAC. Articles written in Sadhana. Volume 42 Issue 7 July 2017 pp 1193-1201. Sediment management of run-of-river hydroelectric power project in the Himalayan region using hydraulic model studies · NEENA ISAAC T I ELDHO · More Details Abstract Fulltext PDF. Storage capacity of ...

  19. Sadhana | Indian Academy of Sciences

    Indian Academy of Sciences (India)

    Home; Journals; Sadhana. T I ELDHO. Articles written in Sadhana. Volume 42 Issue 7 July 2017 pp 1193-1201. Sediment management of run-of-river hydroelectric power project in the Himalayan region using hydraulic model studies · NEENA ISAAC T I ELDHO · More Details Abstract Fulltext PDF. Storage capacity of ...

  20. The greatest hydroelectric power plant in the world. Itaipu Hydroelectric Power Plant

    International Nuclear Information System (INIS)

    Andonov - Chento, Ilija

    2004-01-01

    Details to demonstrate the size and engineering achievements of one of the world's greatest hydroelectric power plant are given. Principal technical features of construction and operation of the Itaipu Dam are tabulated and discussed

  1. improvement of hydroelectric power generation using pumped

    African Journals Online (AJOL)

    HOD

    1, 4 DEPARTMENT OF SYSTEMS ENGINEERING, UNIVERSITY OF LAGOS, AKOKA, YABA, ... pumped storage system for generating hydroelectric power all year round. ... Power supply situation in Nigeria has no doubt ..... (objective functions), criteria for evaluation of control .... adsen H “Para eter esti ation in distributed.

  2. Daily storage management of hydroelectric facilities

    NARCIS (Netherlands)

    Chappin, E.J.L.; Ferrero, M.; Lazzeroni, P.; Lukszo, Z.; Olivero, M.; Repetto, M.

    2012-01-01

    This work presents a management procedure for hydroelectric facilities with daily storage. The water storage gives an additional degree of freedom allowing to shift in time power production when it is more convenient and to work at the maximum efficiency of hydraulic turbine. The management is

  3. Water and Gender in Recreating Family Life with Maa Ganga: The Confluence of Nature and Culture in a North Indian River Pilgrimage

    Directory of Open Access Journals (Sweden)

    Catrien Notermans

    2016-11-01

    Full Text Available This article studies the meaning of water and gender in the North Indian pilgrimage to the sacred river Ganges. It joins the recent criticism in anthropology concerning the nature/culture divide and aims to transcend that divide by focusing on water, not apart from but as part of social life. Assuming that water’s sociality is gendered, the authors look at how both the river water—itself as a landscape material—and the pilgrims’ engagements with that water are gendered. Starting from the central question: How do men’s and women’s ritual engagements with the sacred female river water (mutually construct social life? The article investigates men’s and women’s ritual use of water at different sites. It focuses on more than the central pilgrimage shrine and links the sacred river site to people’s homes to know how the moving river water, collected by pilgrims at the shrine, is used in water rituals back home. Trying to counterbalance the male and scriptural bias which is prominent in the literature on Ganges’ pilgrimage sites, the pilgrimage is studied from the perspective of lived religion that takes people’s embodied practices and sensory experiences of nature into account as well as people’s everyday life. By showing how men’s and women’s rituals differ and complement each other, it argues that men’s rituals at the pilgrimage site and women’s rituals at home serve the recreation of the family in a paired way. The argument is built on longitudinal and multi-sited ethnographic fieldwork at the Ganges river shrine in Haridwar (Uttarakhand and pilgrims’ residence in Udaipur (Rajasthan.

  4. The geomechanical characterization of the rocky mass foundation of the Tijuco Alto hydroelectric power plant, Ribeira River, Sao Paulo/Parana States, Brazil; Caracterizacao geomecanica do Macico de Fundacao da UHE Tijuco Alto (Rio Ribeira - SP/PR)

    Energy Technology Data Exchange (ETDEWEB)

    Figueiredo, Amarilis Lucia Casteli de

    1996-07-01

    This work has as its main objective the geomechanical characterization on the future rocky mass foundation of the Tijuco Alto dam, sited at the Ribeira river, in the cities of Ribeirao, Sao Paulo state and Adrianopolis, Parana state, Brazil, owned by the Companhia Brasileira de Aluminio (Brazilian company of Aluminium). To reach that target, field studies were made to qualify the geotechnical parameters of the rocky mass, in the axis area open galleries. It was also used in situ deformability and stress test results performed in those galleries, that were reinterpreted for a better adaptation of the mass values. The knowledge of the mass inherent characteristics together with the laboratories test results, allowed for the geomechanical classification applications in several different gallery sectors. The geomechanical data obtained allowed through mathematical expressions, to reach the rocky mass values correlations of interest to the work (deformability and strength), that could be compared to the in situ test results. That analysis permitted, besides the classification critical system evaluation, the geomechanical characterization of the rocky mass, focusing its ability to the dam arch construction. (author)

  5. Mercury concentrations of fish in Southern Indian Lake and Issett Lake, Manitoba 1975-88: The effect of lake impoundment and Churchill River diversion

    International Nuclear Information System (INIS)

    Strange, N.E.; Bodaly, R.A.; Fudge, R.J.P.

    1991-01-01

    Southern Indian and Issett Lakes in northern Manitoba were flooded in 1976 as part of Manitoba Hydro's Churchill River diversion project. Fish were collected from 1975 to 1988 from five regional sites on the lakes to examine the effects of impoundment and river diversion on muscle mercury concentrations. Raw data for individual fish caught in 1987 and 1988 are presented, along with means and analyses calculated over the entire 1975-1988 study period. Mercury concentrations in whitefish, pike, and walleye increased significantly after impoundment. Whitefish mercury levels peaked in 1978 and have since declined to near pre-flooding levels. Northern pike and walleye mercury levels were much higher than for whitefish. Pike mercury concentrations showed no indication of declining after 12 years of impoundment, but walleye mercury levels at 2 of the 5 Southern Indian Lake sites declined from maximum recorded levels. Significant variability in fish mercury concentrations was noted both from year to year and among the sites. It is suggested that site-to-site variations are due to varying conditions in the reservoir which stimulate mercury methylation. Since there appears to be an ongoing long-term source of mercury and organic material from the eroding shorelines, pike and walleye mercury concentrations are expected to remain high for many years. 25 refs., 7 figs., 20 tabs

  6. HLA class II variation in the Gila River Indian Community of Arizona: alleles, haplotypes, and a high frequency epitope at the HLA-DR locus.

    Science.gov (United States)

    Williams, R C; McAuley, J E

    1992-01-01

    A genetic distribution for the HLA class II loci is described for 349 "full-blooded" Pima and Tohono O'odham Indians (Pimans) in the Gila River Indian Community. A high frequency epitope in the *DRw52 family was defined by reactions with 31 alloantisera, which we have designated *DR3X6. It segregates as a codominant allele at HLA-DR with alleles *DR2, *DR4, and *DRw8, and has the highest frequency yet reported for an HLA-DR specificity, 0.735. It forms a common haplotype with *DRw52 and *DQw3 that is a valuable marker for genetic admixture and anthropological studies. Phenotype and allele frequencies, and haplotype frequencies for two and three loci, are presented. Variation at these loci is highly restricted, the mean heterozygosity for HLA-DR and HLA-DQ being 0.361. The Pimans represent a contemporary model for the Paleo-Indians who first entered North America 20,000 to 40,000 years ago.

  7. Water quality in the lotic area of the Antas river before and after the construction of the Monte Claro hydroelectric plant, south Brazil Qualidade da água nos trechos lóticos do rio das Antas antes e após a construção da usina hidrelétrica Monte Claro, sul do Brasil

    Directory of Open Access Journals (Sweden)

    Adriane Marques Pimenta

    2013-01-01

    Full Text Available AIM: This study characterized the water quality of the lotic areas of the Rio das Antas (Antas Riverinfluenced by the construction of the Monte Claro hydroelectric plant (South Brazil, a run-of-the-river reservoir. METHODS: To assess the water quality, we selected four sampling points based on the results obtained in the water-quality monitoring program performed by CERAN (the Rio das Antas Energetic Company in the pre-filling (2002-2004 and post-filling (2005-2008 periods. The river flow was monitored during both of the periods. Seasonal samplings were conducted, and alkalinity, chlorophyll a, total and fecal coliforms, conductivity, color, BOD, COD, total phosphorus, nitrate, nitrite, ammoniacal nitrogen, dissolved oxygen, pH, total dissolved solids, suspended solids, sulfates, temperature and turbidity were evaluated. The results were interpreted according to the Brazilian Environmental Council's Water Quality Index, Trophic State Index and CONAMA Resolution 357/05. To verify the occurrence of alterations before and after the plant operation, t-tests were performed. RESULTS: Significant changes in water quality were not observed after the impoundment. The permanence of the characteristics of the natural hydrography was important for maintaining the water quality. The decline of the water quality in a stretch with reduced flow was caused by Burati stream, a tributary containing high concentrations of nutrients and fecal coliforms. CONCLUSIONS:The Monte Claro hydroelectric plant did not alter the water quality of the Antas River. The small reservoir resulting from the plant project favors the maintenance of the water quality of the river and does not favor eutrophication. Attention should be given to Burati stream, a tributary of the Antas River, regarding its high nutrient and coliform content.OBJETIVOS: Este estudo caracterizou a qualidade da água nos trechos lóticos do rio das Antas influenciados pela construção da usina hidrel

  8. Report of the joint review panel : Glacier Power Ltd Dunvegan Hydroelectric Project, Fairview, Alberta

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2008-12-19

    This paper presented the results of a review of the Dunvegan hydroelectric project proposed for development on Alberta's Peace River. In addition to stating the project's purpose, viability, and benefits, the review examined the potential environmental and socio-economic impacts of the hydroelectric project and outlined conclusions developed through consultation with participants of public hearings. The review included a study of transmission lines needed for the project, and the likely impact of the hydroelectric plant on the Peace River fishery and ice regimes. Geotechnical issues related to slope stability, sedimentation and channel morphology, seismicity, and sedimentation in the region were analyzed. The impact of the project on wildlife, vegetation and forest resources was also examined. The study also examined impacts related to health and safety. Potential cumulative effects were reviewed, and First Nations and Metis concerns were outlined. It was concluded that impacts related to the construction, operation, and decommissioning of the project are not likely to be significant. tabs., figs.

  9. The political economy of Canadian hydro-electricity : between old provincial hydros and neoliberal regional energy regimes

    International Nuclear Information System (INIS)

    Netherton, A.

    2007-01-01

    In economic terms, hydro-electricity is considered as a quasi-staple, as it prone to the classic staples problem of excess capacity. However, neither water nor hydroelectricity in Canada is produced primarily for export markets. Hydroelectric systems are often thought of as politicized monopolies. This paper discussed changes that have occurred in hydroelectric organizations over time, as they have been governed by a formative mixed regime; postwar provincial hydro systems; a megaprojects regime; and an emerging sustainability regionalization regime. The origins of electricity generation and transmission in Canada were discussed, as well as the ecological footprint of large mega-projects on rivers. The development of provincial hydro monopolies during the mid- to late- twentieth century was also outlined, as well as the sustainability and regionalization regime that developed after 1990. During the mature staples period of the mid-century, rents in hydro-electric organizations were distributed through cheap rates to subsidize and facilitate the development of mass production and mass consumption. However, post-staples consumption has now replaced mass consumption, and demand side management is replacing earlier cheap power policies. Nonetheless, the lack of systematic integration of networks has led to inefficiencies. Provincial grids are now being integrated into interconnected North American regional networks regulated by the United States. It was concluded that the Canadian electricity regime is increasingly influenced by the the supranational role that the United States is playing in structuring markets. 83 refs

  10. Tropical systems from the southwest Indian Ocean making landfall over the Limpopo River Basin, southern Africa: a historical perspective

    CSIR Research Space (South Africa)

    Malherbe, J

    2011-03-01

    Full Text Available The study provides perspective on the contribution of landfalling tropical systems (cyclones, depressions, storms and lows) from the southwest Indian Ocean (SWIO) towards rainfall over the eastern interior of southern Africa, over the period 1948...

  11. 78 FR 33435 - Indian Gaming

    Science.gov (United States)

    2013-06-04

    ... DEPARTMENT OF THE INTERIOR Bureau of Indian Affairs Indian Gaming AGENCY: Bureau of Indian Affairs, Interior. ACTION: Notice of Approved Tribal-State Class III Gaming Amendments. SUMMARY: This notice publishes approval of an Agreement to Amend the Class III Tribal-State Gaming Compact between the Salt River...

  12. The hydroelectric power market in the United States

    International Nuclear Information System (INIS)

    2002-01-01

    The second-largest producer of hydroelectric power in the world is the United States, right after Canada. In the United States, 7.1 per cent of net electricity generation was attributed to hydroelectric power in 2000, which totalled 269 terawatt hours (TWh). Aging facilities, outdated technology in some facilities, a cumbersome licensing process, and increasing environmental demands from interest groups for the preservation of river systems and surrounding wildlife challenge the industry. Pacific Coast states, especially California, were faced with electric power shortages during the summer of 2001, due to low market prices, high power usage among consumers and drought. The problems with the deregulation of the electricity market were brought to light by these shortages. Legislation to restructure the electric power industry in 25 states had not been enacted as of January 2002. The purchase of more power from both Canada and the Mexico is being considered by the government of the United States, as is the creation of a national power grid to allow for power transmission throughout the country. The Canada-United States energy trade might be affected by such a move, and result in project construction opportunities for Canadian companies. Renewable energy sources must be responsible for the generation of 10 per cent of power generation levels by 2020, on a gradual basis as mandated by law. By 2005, New York City must purchase 10 per cent of its power from renewable energy sources, reaching 20 per cent by 2010. The repair and replacement of aging dam equipment, the development of advanced turbine technology to protect fish stocks and water quality, dam removal, the construction of power lines are all opportunities open to Canadian companies. 60 refs., 5 tabs

  13. Changes in the state territory, systemic changes, the development of ecological thinking and the issues of the utilisation of hydroelectric power in Hungary

    Directory of Open Access Journals (Sweden)

    HAJDÚ Zoltán

    2012-09-01

    Full Text Available Each big river, including the Danube, makes a single system from their spring to their delta or estuary. Wherever we intervene into the system, this will be necessarily affect the whole of that. Thespillover effects are especially striking in the case of the lower reaches, in the Danube River in the Delta area. The utilisation of the hydroelectric power of the Danube River has been continuously on the agenda in the Hungarian areas since the turn of the 19th and 20th centuries, as an economic, planning, development and thenpolitical and environmental issue. The plans made before the World War I featured hydroelectric plants as the carriers of technical and scientific progress. World War I and the subsequent changes of the state borders swept these plans aside. Between the two world wars, the planning of hydroelectric power stations on the Danube wascontinued within the new state borders, two Hungarian governments and prime ministers of the time were fully committed to the construction of three power plants on the Danube River. After World War II, the hydroelectric plant planned on the Hungarian-Czechoslovakian border and its construction became a basic economic and, from the 1980s, an environmental issue. Finally, only a part of the planned hydroelectric power plant system was constructed, and the issue was not finally closed by specific interpretation of the international law. The Danube Strategy of the European Union, the programmes until 2020, the increase of the role of renewable anergies, the nuclear disaster in Japan, and the interests of international navigation filled the debate with new content. Thepossibility of the construction of hydroelectric power plants on the Danube River was “accidentally” put among the official documents of the government in power since 2010. The government declared it had nothing to do with the plans, and the debate has been going on since then.

  14. Emissions from hydroelectric reservoirs and comparison of hydroelectricity, natural gas and oil

    International Nuclear Information System (INIS)

    Gagnon, L.; Chamberland, A.

    1993-01-01

    When reservoirs are created, a small fraction of the flooded organic matter decomposes into humic acids, carbon dioxide (CO 2 ), methane (CH 4 ), nitrogen, phosphorus, and other elements. The major greenhouse gases produced are CO 2 and CH 4 . For northern projects, Canadian studies on emissions from hydroelectric reservoirs have reached similar conclusions: Emissions, including methane, are less than 35 kg CO 2 equivalent per MWh. Using a typical project in northern Quebec as the basis for analysis, none of the studies dispute the considerable advantages of hydroelectricity regarding greenhouse gas emissions. Taking into account all components of energy systems, emissions of greenhouse gases from natural-gas power plants are 24 to 26 times greater than emissions from hydroelectric plants. The Freshwater Institute, in an article published in Ambio suggests that emissions from hydroelectric plants could be a significant source of greenhouse gases. This conclusion does not apply to most hydroelectric projects for two reasons: First, the Freshwater Institute's studies concerned flooded peatlands and shallow reservoirs that are not typical of most hydro projects; and second, the Institute analyzed a hydro project with a ratio of flooded area to energy production that is 6 to 10 times higher than typical projects in Canada. 7 refs, 4 tabs

  15. Hydroelectricity - An Answer To Energy Needs

    Energy Technology Data Exchange (ETDEWEB)

    Francois-Xausa, Maryse; Havard, David; Czerwinski, Francois; Teller, Olivier

    2010-09-15

    The energy challenges of the next 30 years appear daunting and, in certain cases, in conflict with one another. Their complexity is such that one solution alone cannot provide a full answer. It is nevertheless equally clear that hydro-electricity, being renewable, proven, highly efficient, storable and with still very significant resource potential, possesses a unique combination of attributes which will aid decision-makers to plan and execute energy development with confidence.

  16. Environmental requirements at hydroelectric power plants

    International Nuclear Information System (INIS)

    Cada, G.F.

    1993-01-01

    Hydroelectric power is the most mature and widely implemented of the renewable energy technologies. The energy of flowing water has been used to perform work directly since ancient times, and the use of hydropower turbines to generate electricity traces back to the 19th century. Two commonly used turbine types, the Francis and Kaplan turbines, are essentially refinements of the simple reaction turbine of Hero of Alexandria, dating from about 100 B.C. (NAS 1976). Hydroelectric power production provides over 10% of the net electrical generation in the US, more than petroleum or natural gas and far more than the other renewable energy technologies combined. On a regional basis, hydroelectric power represents 14% of the net electrical power generation in the Rocky Mountain states and nearly 63% along the Pacific Coast. Those states that have the largest percentages of their electricity generated by hydropower (e.g., Idaho, Oregon, Montana, and Washington) also tend to have the lowest average cost of electricity per kilowatt-hour

  17. Local Economic Development and Hydropower Along the Brahmaputra River Basin in Northeast India

    Science.gov (United States)

    Mock, A.

    2014-12-01

    Large dams have long been controversial. They offer benefits, such as reduced greenhouse gas emissions, energy security, and local development, yet produce negative social and ecological impact, such as wildlife habitat destruction, human displacement, and the disruption of downstream fishing or agricultural industries. In the past decade, the Indian government has signed Memoranda of Understanding with hydroelectric power companies for the building of over 130 large dams on the Brahmaputra River in the state of Arunachal Pradesh in Northeast India. These dams can generate 43% of India's assessed hydropower potential to sustain India's growing economy. In addition, the Indian government claims that these dams will bring local development with needed jobs. However, local Arunachali people have protested and temporarily halted hydropower projects because of the impact of dams on their existing livelihoods. Using the North Eastern Electric Power Corporation's (NEEPCO) Ranganadi Hydroelectric Project as a case study, our project examined whether dams in Northeast India provide jobs for local people, and whether distance from the dam or work colony to a worker's hometown affects the type of job the worker received. Survey data from residents at NEEPCO's work colony in Doimukh, Arunachal Pradesh, was analyzed using SPSS (n = 18). Our research found that 100% of workers at the dam originally resided in Northeast India, with 33% from Arunachal Pradesh, and 67% from the nearby states of Assam, and Tripura. Further, our analysis revealed no statistically significant relationship between the distance to a worker's hometown and job type (p = .609). Where workers come from did not affect the type of job they received. More research using a larger sample size and additional hydroelectric project case studies is needed to further explore the relationship between worker home location and their job types.

  18. Indian Summer

    Energy Technology Data Exchange (ETDEWEB)

    Galindo, E. [Sho-Ban High School, Fort Hall, ID (United States)

    1997-08-01

    This paper focuses on preserving and strengthening two resources culturally and socially important to the Shoshone-Bannock Indian Tribe on the Fort Hall Reservation in Idaho; their young people and the Pacific-Northwest Salmon. After learning that salmon were not returning in significant numbers to ancestral fishing waters at headwater spawning sites, tribal youth wanted to know why. As a result, the Indian Summer project was conceived to give Shoshone-Bannock High School students the opportunity to develop hands-on, workable solutions to improve future Indian fishing and help make the river healthy again. The project goals were to increase the number of fry introduced into the streams, teach the Shoshone-Bannock students how to use scientific methodologies, and get students, parents, community members, and Indian and non-Indian mentors excited about learning. The students chose an egg incubation experiment to help increase self-sustaining, natural production of steelhead trout, and formulated and carried out a three step plan to increase the hatch-rate of steelhead trout in Idaho waters. With the help of local companies, governmental agencies, scientists, and mentors students have been able to meet their project goals, and at the same time, have learned how to use scientific methods to solve real life problems, how to return what they have used to the water and land, and how to have fun and enjoy life while learning.

  19. Asthma triggers on the Cheyenne River Indian Reservation in western South Dakota: the Breathing Relief Education and Tribal Health Empowerment (BREATHE) Study.

    Science.gov (United States)

    O'Leary, Rae; Wallace, James

    2012-02-01

    The purpose of this article is to better understand asthma triggers and possible causes of exacerbations among BREATHE participants on the Cheyenne River Indian Reservation in western South Dakota. To qualify for enrollment, participants had to have physician-diagnosed asthma, be uncontrolled and have persistent symptoms. Participants were asked to identify their top two asthma triggers throughout their one-year enrollment during initial visits and subsequent phone follow-ups. In addition, participant's medical records were reviewed for visits to the emergency department (ED) to demonstrate asthma exacerbations. In 2008, 127 interviews were conducted with 45 enrolled participants for a total of 254 results. Overall, the three most common self reported triggers were cold air, dust and smoke and these comprised nearly half (48.4 percent) of all reports. Dust was reported in 16.5 percent of interviews and ranked among the top four for every season. Smoke (12.6 percent) and cold air (19.3 percent) were leaders in all seasons except summer, but humid air, pollens and strong odors were unique to summer. Exercise/activity ranked high during the winter and spring, but was reported less in summer and fall. There was no identifiable trend in ER visits by season. People with asthma living on the Cheyenne River Indian Reservation or other locations with similar community and geographic demographics are most likely to suffer an asthma exacerbation from exposure to cold air, dust, smoke and exercise/activity. Asthma education is necessary on all levels, but information on avoidance and control of these most common reported triggers is especially important.

  20. 75 FR 38800 - Jordan Hydroelectric Limited Partnership; Notice of Application Ready for Environmental Analysis...

    Science.gov (United States)

    2010-07-06

    ... Hydroelectric Limited Partnership; Notice of Application Ready for Environmental Analysis and Soliciting... following hydroelectric application has been filed with the Commission and is available for public... 13, 2009. d. Applicant: Jordan Hydroelectric Limited Partnership. e. Name of Project: Flannagan...

  1. 78 FR 6319 - Eastern Hydroelectric Corporation; Notice Rejecting Request for Rehearing

    Science.gov (United States)

    2013-01-30

    ... DEPARTMENT OF ENERGY Federal Energy Regulatory Commission [Project No. 7019-068] Eastern... an order amending license Article 401 for Eastern Hydroelectric Corporation's (Eastern Hydroelectric....\\1\\ On January 11, 2013, Eastern Hydroelectric filed a request for rehearing of Commission staff's...

  2. Stabilization of the dyke on the north bank of the La Grande 1 hydroelectric complex

    International Nuclear Information System (INIS)

    Massiera, M.; Tournier, J-P.

    2000-01-01

    Special design features required in constructing a 2444 m long dyke on the north bank of the La Grade River at the site of the La Grande 1 hydroelectric power project are described. The special features involved construction of a downstream bank and upstream stabilization berms to avoid the occurrence of potentially dangerous retrogressive slides. These special features were deemed essential due to the presence of sensitive marine clay, covered with deltaic sand and silt and river sand deposits. The paper highlights the geotechnical and hydrogeological conditions of the northern terrace, and describes the different construction phases of stabilizing the river bank. Control of groundwater pressures in the lower aquifer with relief wells is emphasized. 9 refs., 1 tab., 17 figs

  3. Legal obstacles and incentives to the development of small scale hydroelectric power in West Virginia

    Energy Technology Data Exchange (ETDEWEB)

    None,

    1980-05-01

    The legal and institutional obstacles to the development of small-scale hydroelectric in West Virginia at the state level are described. The Federal government also exercises extensive regulatory authority in the area. The introductory section examines the dual regulatory system from the standpoint of the appropriate legal doctrine, the law of pre-emption, application of the law to the case of hydroelectric development, and concludes with an inquiry into the practical use of the doctrine by FERC. The development of small-scale hydroelectric energy depends on the selection of a site which will produce sufficient water power capacity to make the project economically attractive to a developer. In West Virginia, the right to use the flowing waters of a stream, creek, or river is appurtenant to the ownership of the lands bordering the watercourse. The lands are known as riparian lands. The water rights are known as riparian rights. Thus, the first obstacle a developer faces involves the acquisition of riparian lands and the subsequent right to the use of the water. The water law in West Virginia is discussed in detail followed by discussions on direct and indirect regulations; continuing obligations; financial considerations; and interstate organizations.

  4. Using fire dynamics simulator to reconstruct a hydroelectric power plant fire accident.

    Science.gov (United States)

    Chi, Jen-Hao; Wu, Sheng-Hung; Shu, Chi-Min

    2011-11-01

    The location of the hydroelectric power plant poses a high risk to occupants seeking to escape in a fire accident. Calculating the heat release rate of transformer oil as 11.5 MW/m(2), the fire at the Taiwan Dajia-River hydroelectric power plant was reconstructed using the fire dynamics simulator (FDS). The variations at the escape route of the fire hazard factors temperature, radiant heat, carbon monoxide, and oxygen were collected during the simulation to verify the causes of the serious casualties resulting from the fire. The simulated safe escape time when taking temperature changes into account is about 236 sec, 155 sec for radiant heat changes, 260 sec for carbon monoxide changes, and 235-248 sec for oxygen changes. These escape times are far less than the actual escape time of 302 sec. The simulation thus demonstrated the urgent need to improve escape options for people escaping a hydroelectric power plant fire. © 2011 American Academy of Forensic Sciences.

  5. Use of mediation to resolve the dispute over low-head hydroelectric development at Swan Lake

    Energy Technology Data Exchange (ETDEWEB)

    O' Connor, D.

    1980-08-01

    In 1978, the Maine Hydroelectric Development Corporation announced that the company planned to renovate five dams on the Goose River near Belfast, Maine to generate electricity. The most important part of the plan involved the use of the first of the dams, at the lower end of Swan Lake, to regulate the flow of water to the downstream dams. For Maine Hydro, management of the Swan Lake dam could make an otherwise marginal proposal lucrative. However, Swan Lake is vitally important to the residents of Swanville. The town was so concerned about the impact of this proposed hydroelectric project that it petitioned the Federal Energy Regulatory Commission (FERC) to deny Maine Hydro's application on the grounds that it would damage the environment, reduce property values and eliminate recreational opportunities for its citizens. This report was written by the mediator of the dispute and represents the views and behavior of the parties as the mediator understood them. It is intended to present the mediator's observations in a way which will inform and assist others who may someday face a difficult situation like the one the Town of Swanville and Maine Hydroelectric Development Corporation faced, and successfully resolved, in the spring and summer of 1979.

  6. Small hydroelectricity at the low point?

    International Nuclear Information System (INIS)

    Mary, Olivier

    2015-01-01

    Small hydroelectricity displays an interesting potential in France (about 1.000 MW), but, as outlined in this article and despite technological advances, this sector is not growing significantly, notably for regulatory reasons: there is no consensus on the impact of these constructions on the environment. The article also outlines that development costs are always higher. These environmental and economic issues result in a transformation of the sector: old and ageing plants owned by individuals are sold to other actors, forms of deregulation are appearing to support the development. In parallel, the article notices that installations depend on their geographical context, and that it is also possible to produce electricity in plains

  7. Hydroelectric dams need billions for rehab

    International Nuclear Information System (INIS)

    Carr, F.H.; Soast, A.

    1993-01-01

    Many of the Corps of Engineers older hydroelectric dams will require major rehabilitation over the next ten years. Preventive maintenance, repair work, and major rehabilitation of the Corp's hydro dams in inadequate because the revenue generated by sales of electricity, by law, is returned to the Treasury. Most multimillion dollar rehabilitation projects require specific approval for funding by Congress and securing it is a long and difficult process. It is hoped the funding problem will soon be addressed by the Clinton administration. Already, nearly one-sixth of the 2,154 Mw of hydro is unavailable because with hydro units are either out of service or operating at less than full capacity

  8. Sub-Saharan hydroelectric power development potential

    International Nuclear Information System (INIS)

    Lazenby, J.B.C.

    1991-01-01

    Though evidencing a power demand which is amongst the lowest in the world, the sub-Saharan regions of Africa are blessed with an enormous hydroelectric power resource potential, which, if suitably developed and tapped, may become a source of economic electric energy for Europe. With the aid of numerous statistical supply and demand data, this paper surveys the marketing potential of this energy source in Africa. The analysis of future development prospects is carried out with reference to the local socio-economic framework

  9. Cordova Lake dam hydroelectric generating station case study

    International Nuclear Information System (INIS)

    Kerr, D.; Huxley, J.

    1993-01-01

    The Ontario Ministry of Natural Resources released a Crown owned site to the private water power industry as part of the small hydro site release program initiated by the Ontario Government in the mid 1980's. The Cordova Lake Dam Hydroelectric Generating Station, built on this site, has been in operation since the first week of October, 1992. Since that time, the plant has been operating with less than 1 % down time and has generated over 2,400 MWh of electricity. Algonquin Power Systems is responsible for the management and operations of the plant which includes full time monitoring from the company's Mississauga office and a part time employee at Cordova Lake. Cordova Lake Dam is located on the Crowe River at the outlet of Cordova Lake, approximately 125 kilometers east of Toronto, Ontario. The total cost of the Cordova Lake Dam project was $1.6 million. Algonquin Power contributed 20% equity to the project. Algonquin Power was also responsible for all engineering and geotechnical work and for completing the construction and equipment contracts. 1 tab., 2 figs

  10. Small hydro-electric potential: west Poverty Bay region

    Energy Technology Data Exchange (ETDEWEB)

    1981-07-01

    This study has identified six schemes in the Bay of Plenty Electric Power Board area and two in the Poverty Bay Electric Power Board area, of which five and one, respectively, are below the economic limit of $2400/kW suggested by the Ministry of Works and Development as of December 1979. Of these, only three appear both economically and environmentally acceptable. The Takaputahi and Torere schemes are not likely to proceed if the Ministry of Works and Development continue with their plans to develop the Motu River. Furthermore, the Motu Falls scheme is unlikely to proceed for environmental reasons. The schemes identified are not very attractive on the national scale and could not be justified on local terms. However, a detailed feasibility study of the Takaputahi/Torere diversion should be undertaken prior to a decision being made to proceed with the Motu development, or if the proposals are dropped. The present low load and slow growth of the area is such that prior to a small hydro-electric scheme being built, there would need to be an established demand for power.

  11. Hydroelectric power plants may influence profit of company

    International Nuclear Information System (INIS)

    Regula, E.

    2006-01-01

    In this interview with divisional manager of the Division of control of operation of hydroelectric power plants of the Slovenske elektrarne, a.s. Mr. Milan Chudy is published. The effectiveness and its optimisation in hydroelectric power plants of the Slovenske elektrarne, a.s. are discussed

  12. micro hydroelectric power plant development in the west region of ...

    African Journals Online (AJOL)

    DJFLEX

    the west region of Cameroon. KEYWORDS: Problems, micro hydroelectric, funds, craftsmen, Cameroon. INTRODUCTION. Energy from Water streaming down the mountains has been exploited since antiquity to replace muscular effort (Bessac, 2000). The perfection of devices used results today in hydroelectric turbines,.

  13. Instream flow needs below peaking hydroelectric projects

    International Nuclear Information System (INIS)

    Milhous, R.T.

    1991-01-01

    This paper reports on a method developed to assist in the determination of instream flow needs below hydroelectric projects operated in a peaking mode. Peaking hydroelectric projects significantly change streamflow over a short period of time; consequently, any instream flow methodology must consider the dual flows associated with peaking projects. The dual flows are the lowest flow and the maximum generation flow of a peaking cycle. The methodology is based on elements of the Physical Habitat Simulation System of the U.S. Fish and Wildlife Service and uses habitat, rather than fish numbers or biomas, as at basic response variable. All aquatic animals are subject to the rapid changes in streamflow which cause rapid swings in habitat quality. Some aquatic organisms are relatively fixed in location in the stream while others can move when flows change. The habitat available from a project operated in peaking mode is considered to be the minimum habitat occurring during a cycle of habitat change. The methodology takes in to consideration that some aquatic animals can move and others cannot move during a peaking cycle

  14. The role of hydroelectric power in energy economy

    International Nuclear Information System (INIS)

    Allet, B.

    1989-01-01

    The state of development and the technical potential of hydroelectric power worldwide, in Europe and in Switzerland are briefly compared with each other. Afterwards, the most important types of hydroelectric power stations and their function in the electricity-distribution network, are put forward. The realistic possibilities of development in Switzerland, up to the year 2025, of each type of hydroelectric power station is judged with regard to the currently valid regulations. The effects of the peoples' initiative - 'towards the salvation of our waters' or for stricter regulations for the protection of water - on the chances of realisation of these possibilities of development are shown. The forseeable decrease in the production of energy by the existing hydroelectric power stations, as a result of the regulation planned for rest water, is judged. Various forecasts for the future quantity of hydroelectric power production in Switzerland are put forward. 6 figs., 7 tabs., 12 refs

  15. Anthropic contribution on pollution in hydroelectric reservoirs: the case of Sao Simao's hydroelectric power plant - GO/MG, Brazil; Contribuicao antropica na poluicao de reservatorios hidreletricos: o caso da Usina Hidreletrica de Sao Simao - GO/MG

    Energy Technology Data Exchange (ETDEWEB)

    Fonseca, Gizele Araujo Borba da

    2010-02-15

    This study aimed to evaluate the contribution of anthropogenic pollution in hydroelectric reservoirs through a case study of the Sao Simao Hydropower. The literature relates the problem of eutrophication with the addition of nutrients (nitrogen and phosphorus) in excess, resulting in water pollution. Through data for both tributary rivers and the reservoir, it was found that the Sao Simao dam presents a framework for eutrophication. We made an analysis to see which tributary rivers were the main sources of nutrients released into the waters of the reservoir and a survey of possible human activities that are contributing to the intake of nutrients in these tributaries. (author)

  16. Anthropic contribution on pollution in hydroelectric reservoirs: the case of Sao Simao's hydroelectric power plant - GO/MG, Brazil; Contribuicao antropica na poluicao de reservatorios hidreletricos: o caso da Usina Hidreletrica de Sao Simao - GO/MG

    Energy Technology Data Exchange (ETDEWEB)

    Fonseca, Gizele Araujo Borba da

    2010-02-15

    This study aimed to evaluate the contribution of anthropogenic pollution in hydroelectric reservoirs through a case study of the Sao Simao Hydropower. The literature relates the problem of eutrophication with the addition of nutrients (nitrogen and phosphorus) in excess, resulting in water pollution. Through data for both tributary rivers and the reservoir, it was found that the Sao Simao dam presents a framework for eutrophication. We made an analysis to see which tributary rivers were the main sources of nutrients released into the waters of the reservoir and a survey of possible human activities that are contributing to the intake of nutrients in these tributaries. (author)

  17. 75 FR 5107 - Notice of Inventory Completion: U.S. Department of the Interior, Bureau of Indian Affairs...

    Science.gov (United States)

    2010-02-01

    ... Indian Reservation, San Xavier Indian Reservation, and Tohono O'odham Indian Reservation in Maricopa..., near Chuichui and the northern border of the Tohono O'odham Indian Reservation, Pinal County, AZ... River Pima-Maricopa Indian Community of the Salt River Reservation, Arizona; Tohono O'odham Nation of...

  18. A contribution to the methods of determining the optimal exploitation of hydraulically related hydroelectric power plants of different owners

    International Nuclear Information System (INIS)

    Gievski, Igor

    2013-01-01

    For the purpose of solving the water-supply and energy-related problems of the city of Skopje, the need has arisen to construct the 'Skopsko Pole' hydro system. The 'Skopsko Pole' hydro system consists of the power plants 'Kozjak', 'SvetaPetka' and 'Matka'. It is envisioned to use the watercourse of the Treska River and has been envisaged as a multipurpose system, that is, as an anti-flood system, system for irrigation of agricultural land and an electricity producer. Certainly, the meeting of the aforementioned needs will depend on the hydrological potential of the Treska River, which is why an exact and detailed review of the hydrological potential of the Treska River is of vital importance. It is a complex task to determine the optimal work of the hydroelectric power plants built along the same river, even if this is about the so-called run-of-the-water hydroelectric power plants, given the different interests of the water consumers of the same watercourse. This problem will become more complicated if one or more (that is, all) hydroelectric power plants have their own accumulative pools. In this case, the question arises of how the waters of each of the accumulations should be used. During this, we need to bear in mind the fact that every release of water from each of the accumulations alters the elevation points of all the hydroelectric power plants on the same watercourse and thus affects their production and eventually the benefit of their work. With the restructuring of the electric energy systems in different countries over the past 20 years, the vertically integrated power plants have been converted into horizontally integrated ones. In many cases, it is different companies that are the electricity producers, the high-voltage electricity transmitters, and the medium- and low-voltage electricity distributors. Some of these companies are private companies, whereas others are state-owned. Such diverse ownership of the power plants, which are by default

  19. The adventure of hydroelectricity must continue

    International Nuclear Information System (INIS)

    Gravel, C.

    1997-01-01

    An interview with Andre Caille, president and CEO of Hydro-Quebec was presented. The interview focussed on the hydroelectric potential of Hydro-Quebec and open access to the American wholesale market. Hydro-Quebec has the capability to produce 160 to 170 terawatt hours of energy per year which is enough to meet all of Quebec''s needs and to export 12 to 15 per cent. According to M. Caille, research in the field of superconductivity would significantly benefit Hydro-Quebec, since the utility is responsible for 107,000 kilometers of transmission lines. If transmission line losses along those lines could be reduced, power stations could be built even farther from markets. With respect to pricing, Hydro-Quebec continues to sell electricity at regulated prices in Quebec, however, export prices to the U.S. are market driven

  20. Monitoring marginal erosion in hydroelectric reservoirs with terrestrial mobile laser scanner

    Directory of Open Access Journals (Sweden)

    A. M. G. Tommaselli

    2014-06-01

    Full Text Available Marginal erosions in reservoirs of hydroelectric plants have caused economic and environmental problems concerning hydroelectric power generation, reduction of productive areas and devaluing land parcels. The real extension and dynamics of these erosion processes are not well known for Brazilian reservoirs. To objectively assess these problems Unesp (Univ Estadual Paulista and Duke Energy are developing a joint project which aims at the monitoring the progression of some erosive processes and understanding the causes and the dynamics of this phenomenon. Mobile LASER scanning was considered the most suitable alternative for the challenges established in the project requirements. A MDL DynaScan Mobile LASER M150 scanner was selected which uses RTK for real time positioning integrated to an IMU, enabling instantaneous generation of georeferenced point clouds. Two different reservoirs were choose for monitoring: Chavantes (storage plant and Rosana (run-of-river plant, both in the Paranapanema River, border of São Paulo and Paraná States, Brazil. The monitoring areas are scanned quarterly and analysed with base on the point cloud, meshes, contours and cross sections. Cross sections are used to visualize and compute the rate and the dynamics of erosion. Some examples and quantitative results are presented along with an analysis of the proposed technique. Some recommendations to improve the field work and latter data processing are also introduced.

  1. Spatial variation of sediment mineralization supports differential CO2 emissions from a tropical hydroelectric reservoir.

    Science.gov (United States)

    Cardoso, Simone J; Vidal, Luciana O; Mendonça, Raquel F; Tranvik, Lars J; Sobek, Sebastian; Fábio, Roland

    2013-01-01

    Substantial amounts of organic matter (OM) from terrestrial ecosystems are buried as sediments in inland waters. It is still unclear to what extent this OM constitutes a sink of carbon, and how much of it is returned to the atmosphere upon mineralization to carbon dioxide (CO2). The construction of reservoirs affects the carbon cycle by increasing OM sedimentation at the regional scale. In this study we determine the OM mineralization in the sediment of three zones (river, transition, and dam) of a tropical hydroelectric reservoir in Brazil as well as identify the composition of the carbon pool available for mineralization. We measured sediment organic carbon mineralization rates and related them to the composition of the OM, bacterial abundance and pCO2 of the surface water of the reservoir. Terrestrial OM was an important substrate for the mineralization. In the river and transition zones most of the OM was allochthonous (56 and 48%, respectively) while the dam zone had the lowest allochthonous contribution (7%). The highest mineralization rates were found in the transition zone (154.80 ± 33.50 mg C m(-) (2) d(-) (1)) and the lowest in the dam (51.60 ± 26.80 mg C m(-) (2) d(-) (1)). Moreover, mineralization rates were significantly related to bacterial abundance (r (2) = 0.50, p hydroelectric reservoirs.

  2. Productivity and efficiency analysis of privatized hydroelectric generation with a sometimes free input

    Science.gov (United States)

    Halabi, Claudia Elizabeth

    2000-10-01

    In this paper I use a stochastic distance frontier approach to assess the performance of Chile's hydroelectric industry, which operates within a regulatory framework designed to achieve a competitive outcome. An occasionally free input, water, is the sole energy input. The econometric analysis indicates substantial technical and allocative inefficiencies as well as volatile productivity scores, due presumably to the volatility of the energy input. Some allocative inefficiencies have diminished dramatically as the time under deregulation has grown. The Lerner index suggests that firms in the industry enjoy some degree of market power, reflected by prices that exceed marginal costs. This market power is consistent with operation within a centralized dispatch center, as predicted by a strategic bidding model. I also find that run-of-river plants exhibit increasing returns to scale, while plants relying on dams show slightly diminishing returns. The shadow marginal cost for run-of-river plants is found to be close to zero. Substantial cost savings could be realized if firms in Chile's hydro-electric generation industry were to operate efficiently.

  3. 75 FR 30805 - Gibson Dam Hydroelectric Company, LLC; Notice Soliciting Comments, and Final Terms and Conditions...

    Science.gov (United States)

    2010-06-02

    ... Hydroelectric Company, LLC; Notice Soliciting Comments, and Final Terms and Conditions, Recommendations, and Prescriptions May 26, 2010. Take notice that the following hydroelectric application and applicant-prepared..., 2009. d. Applicant: Gibson Dam Hydroelectric Company, LLC. e. Name of Project: Gibson Dam Hydroelectric...

  4. 75 FR 4058 - CRD Hydroelectric, LLC; Notice of Application Ready for Environmental Analysis and Soliciting...

    Science.gov (United States)

    2010-01-26

    ... Hydroelectric, LLC; Notice of Application Ready for Environmental Analysis and Soliciting Comments... hydroelectric application has been filed with the Commission and is available for public inspection. a. Type of.... Applicant: CRD Hydroelectric, LLC. e. Name of Project: Red Rock Hydroelectric Project. f. Location: On the...

  5. 75 FR 71102 - White Mountain Hydroelectric Corp.; Notice of Application for Amendment of License, and...

    Science.gov (United States)

    2010-11-22

    ... Hydroelectric Corp.; Notice of Application for Amendment of License, and Soliciting Comments, Motions To Intervene, and Protests November 12, 2010. Take notice that the following hydroelectric application has been... Hydroelectric Corp. e. Name of Project: Apthorp Hydroelectric Project. f. Location: The project is located on...

  6. Small hydroelectric power plants - shelf goods or tailor-made?

    International Nuclear Information System (INIS)

    Aas, Trond R.

    2002-01-01

    If small hydroelectric power plants are defined to be hydroelectric power plants of up to a few 1000 kW, they should be shelf goods because of cost considerations. Design of small hydroelectric power plants is a many-sided optimization task, on a level with constructing larger hydro power plants. But the budget for a small hydro power plant does not permit any comprehensive evaluations. The most important costs are the one-time costs in the form of investments and the following annual costs in the form of operation and maintenance, and losses. Financing costs are not considered in this article

  7. Monitoring of downstream salmon and steelhead at federal hydroelectric facilities -- 1995. Annual report 1995

    International Nuclear Information System (INIS)

    Martinson, R.D.; Graves, R.J.; Langeslay, M.J.; Killins, S.D.

    1996-12-01

    The seaward migration of juvenile salmonids was monitored by the National Marine Fisheries Service (NMFS) at Bonneville and John Day Dams on the Columbia river in 1995. The NMFS Smolt Monitoring Project is part of a larger Smolt Monitoring Program (SMP) coordinated by the Fish Passage Center (FPC) for the Columbia Basin Fish and Wildlife Authority. This program focuses on protecting, mitigating, and enhancing fish populations affected by the development and operation of hydroelectric power plants on the Columbia River. The purpose of the SMP is to monitor the migration of the juvenile salmonid stocks in the Columbia basin and make flow and spill recommendations designed to facilitate fish passage. Data are also used for travel time, migration timing, and relative run size analysis. The purpose of the NMFS portion of the program is to provide FPC with species and project specific real time data from John Day and Bonneville Dams

  8. Methane emission and oxygen consumption in the hydroelectric dam of Petit Saut in French Guyana

    International Nuclear Information System (INIS)

    Galy-Lacaux, C.; Jambert, C.; Delmas, R.; Dumestre, J.F.; Labroue, L.; Cerdan, P.; Richard, S.

    1996-01-01

    Methane emissions from the hydroelectric dam of Petit-Saut, in French Guyana, were measured over a 20-months period. Since the beginning of the reservoir filling (January 1994), 300 km 2 of tropical forest have been submerged. Biological CH 4 oxidation, in the surface water of the lake and in the river downstream of the dam, lead to an intense 0 2 consumption. Emissions of CH 4 by diffusion into the atmosphere or by degassing of the water released into the river as well as the stock of dissolved gas in the lake, and their temporal dynamics, were studied. Maximum emissions of 700 t (CH 4 ) per day were attained in February 1994, corresponding to maximum dissolved CH 4 concentrations of 14 mg l -1 in the water column. Total emissions since January 1994, were calculated from the whole data set. (authors). 7 refs., 2 figs., 1 tab

  9. Evaluation methodology for flood damage reduction by preliminary water release from hydroelectric dams

    Science.gov (United States)

    Ando, T.; Kawasaki, A.; Koike, T.

    2017-12-01

    IPCC AR5 (2014) reported that rainfall in the middle latitudes of the Northern Hemisphere has been increasing since 1901, and it is claimed that warmer climate will increase the risk of floods. In contrast, world water demand is forecasted to exceed a sustainable supply by 40 percent by 2030. In order to avoid this expectable water shortage, securing new water resources has become an utmost challenge. However, flood risk prevention and the secure of water resources are contradictory. To solve this problem, we can use existing hydroelectric dams not only as energy resources but also for flood control. However, in case of Japan, hydroelectric dams take no responsibility for it, and benefits have not been discussed accrued by controlling flood by hydroelectric dams, namely by using preliminary water release from them. Therefore, our paper proposes methodology for assessing those benefits. This methodology has three stages as shown in Fig. 1. First, RRI model is used to model flood events, taking account of the probability of rainfall. Second, flood damage is calculated using assets in inundation areas multiplied by the inundation depths generated by that RRI model. Third, the losses stemming from preliminary water release are calculated, and adding them to flood damage, overall losses are calculated. We can evaluate the benefits by changing the volume of preliminary release. As a result, shown in Fig. 2, the use of hydroelectric dams to control flooding creates 20 billion Yen benefits, in the probability of three-day-ahead rainfall prediction of the assumed maximum rainfall in Oi River, in the Shizuoka Pref. of Japan. As the third priority in the Sendai Framework for Disaster Risk Reduction 2015-2030, `investing in disaster risk reduction for resilience - public and private investment in disaster risk prevention and reduction through structural and non-structural measures' was adopted. The accuracy of rainfall prediction is the key factor in maximizing the benefits

  10. Sadhana | Indian Academy of Sciences

    Indian Academy of Sciences (India)

    Radar-based hydrological studies in various countries have proven that ... for hydrological modelling and/or flood-related studies in Indian river basins. ... in the runoff volume was small, but the difference in the peak flow was substantial.

  11. The further environmental development of Polyphyto Hydroelectric Project reservoir in Kozani prefecture and its contribution to the life quality improvement

    Science.gov (United States)

    Saounatsou, Chara; Georgi, Julia

    2014-08-01

    The Polyphyto Hydroelectric Project was constructed in 1974 and it has been operating since on the Aliakmonas River, Kozani prefecture, by the Greek Public Power Corporation. The construction of the Ilarion Hydroelectric Project, upstream from the Polyphyto Reservoir, has been recently completed and will start operating in the near future. Apart from hydroelectric power production, the Polyphyto reservoir provides flood control to the areas below the Polyphyto dam. It is also used to manage water provision to the city of Thessaloniki and adjacent agricultural plain, providing at the same time cooling water to the Thermo Electric Projects in Ptolemaida. The Polyphyto reservoir has potential for further development as an economic fulcrum to the region in which is located. The Kozani and Servia-Velvendos Municipalities have proceeded to the construction of several touristic, nautical - athletic and fishing projects. In order to promote such developments, while preserving the artificial wetland, flora and fauna of the Polyphyto Reservoir, it is important to reduce the fluctuation of the reservoir elevation which according to its technical characteristics is 21m. The aim of this paper is to propose the combined operation of the two Hydroelectric Project reservoirs to satisfy all the present Polyphyto Hydroelectric Project functions and to reduce the annual fluctuation of the Polyphyto Reservoir. The HEC-5, Version 8 / 1998 computer model was used in our calculations, as developed by the Hydrologic Engineering Center (HEC) of the US Army Corps of Engineers for reservoir operation simulation. Five possible operation scenarios are tested in this paper to show that the present fluctuation of the Polyphyto Reservoir can be reduced, with some limitations, except during dry weather periods.

  12. The Pilagá of the Argentine Chaco through an exoticizing and ethnographic lens: The Swedish documentary film Following Indian trails by the Pilcomayo River

    Directory of Open Access Journals (Sweden)

    Anne Gustavsson

    2013-10-01

    Full Text Available In this article, we explore how traveling relates to image production and how transcultural filmic representations both uphold and are sustained by a “coloniality of seeing.” We pay special attention to the historical conditions of film making in an expedition context and the expectations associated with early film in Sweden. We discuss this through the study of the documentary film Following Indian Trails by the Pilcomayo River, which was recorded during a Swedish expedition to the Argentine Chaco in 1920 and later released in Stockholm in 1950 during a private screening organized by the Swedish Chaco Travellers Association. We argue that the film presents an account inspired by classic ethnography which rescues and puts into circulation images of indigenous people from the “impenetrable” and “savage” Chaco. The ethnographic emphasis in the narrative seems to have shifted with time as it was probably only partly present during the shooting of the footage. In the narrative mode of “monstration,” when bodies meet machines “in the field,” native performances are presented as an “unstaged” and realist spectacle. Later in the 1950 macro-“narration,” encompassing the final cutting and editing of the original footage, fragments of spectacle are systematized into an ethnographic description of primitive life.

  13. Measuring Indoor Air Quality and Engaging California Indian Stakeholders at the Win-River Resort and Casino: Collaborative Smoke-Free Policy Development

    Directory of Open Access Journals (Sweden)

    Neil E. Klepeis

    2016-01-01

    Full Text Available Most casinos owned by sovereign American Indian nations allow smoking, even in U.S. states such as California where state laws restrict workplace smoking. Collaborations between casinos and public health workers are needed to promote smoke-free policies that protect workers and patrons from secondhand tobacco smoke (SHS exposure and risks. Over seven years, a coalition of public health professionals provided technical assistance to the Redding Rancheria tribe in Redding, California in establishing a smoke-free policy at the Win-River Resort and Casino. The coalition provided information to the casino general manager that included site-specific measurement of employee and visitor PM2.5 personal exposure, area concentrations of airborne nicotine and PM2.5, visitor urinary cotinine, and patron and staff opinions (surveys, focus groups, and a Town Hall meeting. The manager communicated results to tribal membership, including evidence of high SHS exposures and support for a smoke-free policy. Subsequently, in concert with hotel expansion, the Redding Rancheria Tribal Council voted to accept a 100% restriction of smoking inside the casino, whereupon PM2.5 exposure in main smoking areas dropped by 98%. A 70% partial-smoke-free policy was instituted ~1 year later in the face of revenue loss. The success of the collaboration in promoting a smoke-free policy, and the key element of air quality feedback, which appeared to be a central driver, may provide a model for similar efforts.

  14. Measuring Indoor Air Quality and Engaging California Indian Stakeholders at the Win-River Resort and Casino: Collaborative Smoke-Free Policy Development.

    Science.gov (United States)

    Klepeis, Neil E; Dhaliwal, Narinder; Hayward, Gary; Acevedo-Bolton, Viviana; Ott, Wayne R; Read, Nathan; Layton, Steve; Jiang, Ruoting; Cheng, Kai-Chung; Hildemann, Lynn M; Repace, James L; Taylor, Stephanie; Ong, Seow-Ling; Buchting, Francisco O; Lee, Juliet P; Moore, Roland S

    2016-01-20

    Most casinos owned by sovereign American Indian nations allow smoking, even in U.S. states such as California where state laws restrict workplace smoking. Collaborations between casinos and public health workers are needed to promote smoke-free policies that protect workers and patrons from secondhand tobacco smoke (SHS) exposure and risks. Over seven years, a coalition of public health professionals provided technical assistance to the Redding Rancheria tribe in Redding, California in establishing a smoke-free policy at the Win-River Resort and Casino. The coalition provided information to the casino general manager that included site-specific measurement of employee and visitor PM2.5 personal exposure, area concentrations of airborne nicotine and PM2.5, visitor urinary cotinine, and patron and staff opinions (surveys, focus groups, and a Town Hall meeting). The manager communicated results to tribal membership, including evidence of high SHS exposures and support for a smoke-free policy. Subsequently, in concert with hotel expansion, the Redding Rancheria Tribal Council voted to accept a 100% restriction of smoking inside the casino, whereupon PM2.5 exposure in main smoking areas dropped by 98%. A 70% partial-smoke-free policy was instituted ~1 year later in the face of revenue loss. The success of the collaboration in promoting a smoke-free policy, and the key element of air quality feedback, which appeared to be a central driver, may provide a model for similar efforts.

  15. Integral ordering of the River Vardar Valley

    International Nuclear Information System (INIS)

    Stavrov, Jordan

    2004-01-01

    From Skopje to Gevgelia, an annual quantity of 4,5 billions M 3 of water flows out of the territory through the Vardar River for only 60 hours. This poses two questions. The first is whether the flowing out of the water can be decelerated, i.e., whether the water can be kept for at least 60 days and the second question is how this can be realized. Construction of 12 hydroelectric power plants is envisaged along Vardar River, i.e., its section extending from Skopje to the border on Greece, which means within a length of 200 km. Two of these are classical hydroelectric power plants (HPP 'Veles' and HPP 'Gradec'), while the remaining 10 hydroelectric power plants are distributed in a cascade along the river course, with small water head of H = 8,20 - 8,50 m and are considered ecological hydroelectric power plants according to European criteria. For us, these represent a new technology of design and construction particularly considering the part referring to the equipment, while in Europe, there is assembly-line production of such equipment. Presented very briefly in the paper shall be the main technical information on these hydroelectric power plants, namely HPP Kukuricani, as a pilot project to be realized by AD ESM. (Author)

  16. Hydroelectricity: an asset for a successful energy transition in France

    International Nuclear Information System (INIS)

    Galland, J.C.; Vincent, E.

    2013-01-01

    France's national debate on energy transition has served as a reminder that hydroelectric power plays a significant role in French electricity production. With installed power totalling 25400 MW at end 2012 (the second largest in Europe), France's hydroelectric plants produced 63.8 TWh last year (the third largest in Europe), almost 12% of total output. It is France's second largest means of producing electricity and it represents more than 80% of production of renewable energy. A source of energy developed a long time ago, thus benefiting from technological maturity, hydroelectricity can be produced in large quantity at the heart of France's regions, while also rendering indispensable service for the equilibrium of the French electricity system by compensating the intermittency of other renewable energy sources. The production costs of hydroelectric power are the lowest among all power generation technologies. (authors)

  17. EPRI releases strategic plan for hydroelectric R and D

    International Nuclear Information System (INIS)

    Fickett, A.P.

    1993-01-01

    The Electric Power Research Institute has published a report identifying important research needs and issues in the hydroelectric industry. The report is based on results from a survey of representatives of the 1992 North American hydroelectric community. EPRI conducted the survey to expand upon recommendations of the North American Hydroelectric R ampersand D Forum and to develop EPRI's agenda. The report, an EPRI Strategy for Hydropower Research and Development: Rethinking our Water Resource Management Strategies, outlines an agenda for improving the use of water resources and expanding hydroelectric production at existing dams. It also proposes a new, expanded EPRI strategy within the context of the future energy needs of the US and the North American hydro research agenda

  18. Hydroelectric Generating Facilities General Permit (HYDROGP) for Massachusetts & New Hampshire

    Science.gov (United States)

    Documents, links & contacts for the Notice of Availability of the Final NPDES General Permits (HYDROGP) for Discharges at Hydroelectric Generating Facilities in Massachusetts (MAG360000) and New Hampshire (NHG360000) and Tribal Lands in the State of MA.

  19. Power market liberalisation: an opportunity for the hydroelectricity?

    International Nuclear Information System (INIS)

    Loth, P.

    2001-01-01

    This article discusses the future of hydroelectricity in the light of the ongoing liberalisation of the European power market. Compared to fossil electricity, hydroelectricity is a renewable energy source, has a limited impact on the environment, is able to meet strong variations of power demand, but is a little bit more costly. Hydroelectric companies expect the introduction of a quality label for their product as well as the increasing awareness of consumers for environmental aspects to become strong incentives for them to subscribe on green energy despite its higher cost. The cost difference will also be partly reduced by the introduction of a pollution tax on fossil energy sources. Figures on hydroelectricity capacity production, currently and in the near future, in the countries surrounding the Alps are presented. As an example, the business strategy of a Swiss electricity utility is shortly described

  20. assessment of slope stability around gilgel gibe-ii hydroelectric

    African Journals Online (AJOL)

    preferred customer

    1 Gilgel-Gibe II Hydroelectric Project, Fofa Town, Ethiopia ... Key words/phrases: Factor of safety, plane failure, slope design, slope .... condition of potential unstable slopes along the road between Fofa town and Gilgel-Gibe Hydro- power II.

  1. Baseline greenhouse gas emissions for the lower Churchill hydroelectric generation project in Labrador

    International Nuclear Information System (INIS)

    LeDrew, L.; Bastien, J.; Tremblay, A.

    2007-01-01

    Newfoundland and Labrador Hydro has proposed to develop the hydroelectric potential of the lower Churchill River by constructing generating facilities at Gull Island and Muskrat Falls. This paper presented the results of a study that was conducted to collect baseline data on greenhouse gas (GHG) fluxes/emissions of carbon dioxide (CO 2 ), methane (CH 4 ) and nitrous oxide (N 2 O) from the lower Churchill River, Smallwood reservoir, and natural lakes in the upper and lower Churchill regions. The purpose of the study was to compare GHG fluxes between the lower Churchill River, Smallwood reservoir and those of the nearby natural lakes and to compare GHG fluxes between the Smallwood reservoir and those of boreal reservoirs in northern Quebec. The paper provided a description of the site and the methodology for GHG flux measurement. The results and discussion focused on physical-chemical variables and GHG fluxes. The study results were to be used in the environmental assessment of the project. It was concluded that the lower Churchill River has higher CO 2 fluxes and lower CH 4 fluxes than the Smallwood reservoir and higher CO 2 fluxes than natural lakes in the region. There was no significant difference in N 2 O fluxes between the sampled waterbodies. Both CO 2 and CH 4 fluxes from the lower Churchill River were comparable to other Canadian reservoirs. 12 refs., 2 tabs., 6 figs

  2. Impacts of hydroelectric dams on alluvial riparian plant communities in Eastern Brazilian Amazonian.

    Science.gov (United States)

    Ferreira, Leandro Valle; Cunha, Denise A; Chaves, Priscilla P; Matos, Darley C L; Parolin, Pia

    2013-09-01

    The major rivers of the Amazon River basin and their biota are threatened by the planned construction of large hydroelectric dams that are expected to have strong impacts on floodplain plant communities. The present study presents forest inventories from three floodplain sites colonized by alluvial riparian vegetation in the Tapajós, Xingu and Tocantins River basins in eastern Amazonian. Results indicate that tree species of the highly specialized alluvial riparian vegetation are clearly distinct among the three river basins, although they are not very distinct from each other and environmental constraints are very similar. With only 6 of 74 species occurring in all three inventories, most tree and shrub species are restricted to only one of the rivers, indicating a high degree of local distribution. Different species occupy similar environmental niches, making these fragile riparian formations highly valuable. Conservation plans must consider species complementarily when decisions are made on where to place floodplain forest conservation units to avoid the irreversible loss of unique alluvial riparian vegetation biodiversity.

  3. Impacts of hydroelectric dams on alluvial riparian plant communities in eastern Brazilian Amazonian

    Directory of Open Access Journals (Sweden)

    LEANDRO VALLE FERREIRA

    2013-09-01

    Full Text Available The major rivers of the Amazon River basin and their biota are threatened by the planned construction of large hydroelectric dams that are expected to have strong impacts on floodplain plant communities. The present study presents forest inventories from three floodplain sites colonized by alluvial riparian vegetation in the Tapajós, Xingu and Tocantins River basins in eastern Amazonian. Results indicate that tree species of the highly specialized alluvial riparian vegetation are clearly distinct among the three river basins, although they are not very distinct from each other and environmental constraints are very similar. With only 6 of 74 species occurring in all three inventories, most tree and shrub species are restricted to only one of the rivers, indicating a high degree of local distribution. Different species occupy similar environmental niches, making these fragile riparian formations highly valuable. Conservation plans must consider species complementarily when decisions are made on where to place floodplain forest conservation units to avoid the irreversible loss of unique alluvial riparian vegetation biodiversity.

  4. 77 FR 73636 - Rock River Beach, Inc.; Notice of Application Tendered for Filing With the Commission and...

    Science.gov (United States)

    2012-12-11

    ... DEPARTMENT OF ENERGY Federal Energy Regulatory Commission [Project No. 14345-001] Rock River Beach.... c. Date filed: November 23, 2012. d. Applicant: Rock River Beach, Inc. e. Name of Project: Rock River Beach Hydroelectric Project. f. Location: On the Rock River, in the Town of Onota, Alger County...

  5. 77 FR 2966 - Rock River Beach, Inc.; Notice of Application Tendered for Filing With the Commission and...

    Science.gov (United States)

    2012-01-20

    ... DEPARTMENT OF ENERGY Federal Energy Regulatory Commission [Project No. 14345-000] Rock River Beach.... c. Filing Date: January 5, 2012. d. Applicant: Rock River Beach, Inc. e. Name of Project: Rock River Beach Hydroelectric Project. f. Location: On the Rock River, in the Township of Onota, Alger County...

  6. BLUE GOLD: HYDRO-ELECTRIC RENT IN CANADA

    OpenAIRE

    Glenn Jenkins; RICHARD ZUKER

    1984-01-01

    In this study, an attempt is made to develop estimates of the value of economic rent from production of hydro-electricity. These estimates are made for the year 1979, which is the latest period for which a comprehensive set of data was available at the time this work was undertaken. The estimates are developed for the hydro-electricity generated (or used) by electric utilities in four provinces: Quebec (including Churchill Falls), Ontario, Manitoba and British Columbia. These electric systems...

  7. Systematic Sustainability Assessment (SSA) Tool for Hydroelectric Project in Malaysia

    Science.gov (United States)

    Turan, Faiz Mohd; Johan, Kartina

    2017-08-01

    Sustainably developed and managed hydropower has enormous potential to contribute to global sustainability goals. It is known that hydroelectricity contributing small amounts to greenhouse gas emissions and other atmospheric pollutants. However, developing the remaining hydroelectric potential offers many challenges, and public pressure and expectations on the environmental and social performance of hydroelectric tend to increase over time. This paper aims to develop Systematic Sustainability Assessment (SSA) Tool that promotes and guides more sustainable hydroelectric projects in the context of Malaysia. The proposed SSA tool which not only provide a quality and quantitative report of sustainability performance but also act as Self-Assessment Report (SAR) to provide roadmap to achieve greater level of sustainability in project management for continuous improvement. It is expected to provide a common language that allow government, civil society, financial institutions and the hydroelectric sector to talk about and evaluate sustainability issues. The advantage of SSA tool is it can be used at any stage of hydroelectric development, from the earliest planning stages right through to operation.

  8. Madawaska River water management review : issues, concerns, solutions

    International Nuclear Information System (INIS)

    1999-01-01

    Public consultations were held by the Public Advisory Committee, the Ontario Ministry of Natural Resources (MNR) and Ontario Hydro (OH) Working Group and Steering Committee, in an effort to develop a water management system for the Madawaska River, that would address public interests such as public safety, maintenance of the aquatic ecosystem and hydroelectric power generation. Provision of long-term opportunities for broad public involvement in the river's management was an additional objective. The report emphasizes the importance of limiting conflicts between hydroelectric generation and recreation/tourism on the Madawaska River, which runs within the Madawaska Highlands, Algonquin Provincial Park and the Upper Ottawa Valley. The major competing uses for water management in the Madawaska River are: (1) hydroelectric generation, (2) flood control, (3) recreation and tourism, and (4) fish and aquatic ecosystems. Each of these are described in detail, with details of the responses to the issue description and recommended actions

  9. Balance: Hydroelectricity impacts on energy systems

    International Nuclear Information System (INIS)

    Baptista, V.; Baia, L.; Azevedo, H.

    1997-01-01

    The VALORAGUA (Value of Water in Portuguese) computer model was developed by Electricidade de Portugal (EDP) in order to determine the optimal operation strategy of a mixed hydro-thermal power system with an important share of hydroelectricity generation such as the one of Portugal. The model has become the main tool used by EDP for planning the development and operation of its power system. In recent years, EDP has acquired the ENPEP package and has become acquainted with its use for integrated energy and electricity planning. The main goal of this effort has been to incorporate in EDP's planning procedure an integrated approach for determining the possible role of electricity in meeting the overall requirements for energy of the country, with due account to the impacts (resource requirements and environmental emissions) of alternative energy and electricity systems. This paper concentrates on a comparison of the results of the BALANCE module of ENPEP for the electricity sector against the simulation results provided by VALORAGUA. Suggested improvements to the methodologies in order to overcome the divergences in results from these two models are also advanced in the paper. (author). 15 figs

  10. Economic aspects of hydroelectric power scheme rehabilitation

    International Nuclear Information System (INIS)

    Dupuy, M.

    1991-01-01

    As part of the management of a utility, it is necessary to check, beyond the technical aspect, the economic suitability of deciding whether to perform the maintenance or rehabilitation of an installation. The decision criteria involved are to be found within the framework of the utility's management system itself. After having set out the decision-making process of hydroelectric power station maintenance or rehabilitation, the document goes on to give a description of the economic advantage of such an operation. The latter is determined after having properly defined the overall cost of maintenance or rehabilitation: direct expenses and induced costs, and expected savings: economic performance, short and medium-term reduction of expenses as a result of the profitability and productivity of the rehabilitation. The profitability is calculated as the ratio between the economic balance and the amount of the operation. Productivity means the improvement of the utility's management indicators. The random aspect of savings and a simple method making it possible to integrate them into a calculation is mentioned, as well as the classification and aggregation of various operations of a similar nature that have to come into the budget requirements of the utility. (Author)

  11. Balance: Hydroelectricity impacts on energy systems

    Energy Technology Data Exchange (ETDEWEB)

    Baptista, V; Baia, L; Azevedo, H [Electricidade de Portugal, Porto (Portugal)

    1997-09-01

    The VALORAGUA (Value of Water in Portuguese) computer model was developed by Electricidade de Portugal (EDP) in order to determine the optimal operation strategy of a mixed hydro-thermal power system with an important share of hydroelectricity generation such as the one of Portugal. The model has become the main tool used by EDP for planning the development and operation of its power system. In recent years, EDP has acquired the ENPEP package and has become acquainted with its use for integrated energy and electricity planning. The main goal of this effort has been to incorporate in EDP`s planning procedure an integrated approach for determining the possible role of electricity in meeting the overall requirements for energy of the country, with due account to the impacts (resource requirements and environmental emissions) of alternative energy and electricity systems. This paper concentrates on a comparison of the results of the BALANCE module of ENPEP for the electricity sector against the simulation results provided by VALORAGUA. Suggested improvements to the methodologies in order to overcome the divergences in results from these two models are also advanced in the paper. (author). 15 figs.

  12. Analysis of environmental issues related to small-scale hydroelectric development. III. Water level fluctuation

    Energy Technology Data Exchange (ETDEWEB)

    Hildebrand, S.G. (ed.)

    1980-10-01

    Potential environmental impacts in reservoirs and downstream river reaches below dams that may be caused by the water level fluctuation resulting from development and operation of small scale (under 25MW) hydroelectric projects are identified. The impacts discussed will be of potential concern at only those small-scale hydroelectric projects that are operated in a store and release (peaking) mode. Potential impacts on physical and chemical characteristics in reservoirs resulting from water level fluctuation include resuspension and redistribution of bank and bed sediment; leaching of soluble organic matter from sediment in the littoral zone; and changes in water quality resulting from changes in sediment and nutrient trap efficiency. Potential impacts on reservoir biota as a result of water level fluctuation include habitat destruction and the resulting partial or total loss of aquatic species; changes in habitat quality, which result in reduced standing crop and production of aquatic biota; and possible shifts in species diversity. The potential physical effects of water level fluctuation on downstream systems below dams are streambed and bank erosion and water quality problems related to resuspension and redistribution of these materials. Potential biological impacts of water level fluctuation on downstream systems below dams result from changes in current velocity, habitat reduction, and alteration in food supply. These alterations, either singly or in combination, can adversely affect aquatic populations below dams. The nature and potential significance of adverse impacts resulting from water level fluctuation are discussed. Recommendations for site-specific evaluation of water level fluctuation at small-scale hydroelectric projects are presented.

  13. Spatial variation of sediment mineralization supports differential CO2 emissions from a tropical hydroelectric reservoir

    Directory of Open Access Journals (Sweden)

    Simone Jaqueline Cardoso

    2013-04-01

    Full Text Available Substantial amounts of organic matter (OM from terrestrial ecosystems are buried as sediments in inland waters. It is still unclear to what extent this OM constitutes a sink of carbon, and how much of it is returned to the atmosphere upon mineralization to carbon dioxide (CO2. The construction of reservoirs affects the carbon cycle by increasing OM sedimentation at the regional scale. In this study we determine the OM mineralization in the sediment of three zones (river, transition and dam of a tropical hydroelectric reservoir in Brazil as well as identify the composition of the carbon pool available for mineralization. We measured sediment OC mineralization rates and related them to the composition of the OM, bacterial abundance and pCO2 of the surface water of the reservoir. Terrestrial OM was an important substrate for the mineralization. In the river and transition zones most of the OM was allochthonous (56 % and 48 %, respectively while the dam zone had the lowest allochthonous contribution (7 %. The highest mineralization rates were found in the transition zone (154.80 ± 33.50 mg C m-2 d-1 and the lowest in the dam (51.60 ± 26.80 mg C m-2 d-1. Moreover, mineralization rates were significantly related to bacterial abundance (r2 = 0.50, p < 0.001 and pCO2 in the surface water of the reservoir (r2 = 0.73, p < 0.001. The results indicate that allochthonous OM has different contributions to sediment mineralization in the three zones of the reservoir. Further, the sediment mineralization, mediated by heterotrophic bacteria metabolism, significantly contributes to CO2 supersaturation in the water column, resulting in higher pCO2 in the river and transition zones in comparison with the dam zone, affecting greenhouse gas emission estimations from hydroelectric reservoirs.

  14. What factors drive fishery yields in the Lower Shire River, Malawi ...

    African Journals Online (AJOL)

    The Shire River drains from Lake Malawi to the Lower Zambezi River. Annual flow is dependent mainly on lake level, partially controlled by the operation of a barrage at Liwonde to regulate flows for hydroelectricity generation in the escarpment reaches of the river. Downstream of the escarpment, the floodplains of the ...

  15. Downstream impacts of a Central Amazonian hydroelectric dam on tree growth and mortality in floodplain forests

    Science.gov (United States)

    Resende, A. F. D.; Silva, T. S. F.; Silva, J. D. S.; Piedade, M. T. F.; Streher, A. S.; Ferreira-Ferreira, J.; Schongart, J.

    2017-12-01

    The flood pulse of large Amazonian Rivers is characterized by predictable high- and low-water periods during the annual cycle, and is the main driving force in the floodplains regulating decomposition, nutrient cycles, productivity, life cycles and growth rhythms of floodplains' biota. Over at least 20 millions of years, tree species in these ecosystems developed complex adaptative mechanisms to tolerate flooding, such as the tree species Macrolobium acaciifolium (Fabaceae) and Eschweilera tenuifolia (Lecythidaceae) occupying the lower topographic positions in the floodplain forests along the oligothrophic black-water rivers. Tree growth occurs mainly during terrestrial phase, while during the aquatic phase the anoxic conditions result into a cambial dormancy and formation of annual tree rings. The hydroelectric dam Balbina which was installed in the Uatumã River (central Amazonia) during the 1980s altered significantly the flood pulse regime resulting into higher minimum and lower maximum annual water levels. The suppression of the terrestrial phase caused large-scale mortality of flood-adapted trees growing on the lower topographic positions, as evidenced by radiocarbon dating and cross-dating techniques (dendrochronology). In this study we estimated the extension of dead forests using high resolution ALOS/PALSAR radar images, for their detection along a fluvial distance of more than 280 km downstream of the power plant. Further we analyzed tree growth of 60 living individuals of E. tenuifolia by tree-ring analyses comparing the post- and pre-dam periods. We evaluated the impacts of the altered hydrological regime on tree growth considering ontogenetic effects and the fluvial distance of the trees to the dam. Since the Balbina power plant started operating the associated igapó forests lost about 11% of its cover. We found a significant reduction of tree growth of E. tenuifolia during the post-dam period as a consequence of the increasing aquatic phase duration

  16. Reflections on hydroelectric dams in the Amazon: water, energy and development

    Directory of Open Access Journals (Sweden)

    Bertha Koiffmann Becker

    2012-12-01

    Full Text Available The essay discusses the deployment of hydroelectric dams in the Amazon having as a starting point the relations between water and hydropower consumption at different scales of analyses. So, if all parts of the world are affected by global processes, they are not in the same way. The global scale is dominated by the apocalyptic discourse of increasing water scarcity and global warming, requiring the reduction of emissions of greenhouse gases through the use of renewable energy and new technologies. On a Brazilian national scale, the problems are, rather, how to manage the abundance of water with social and territorial justice, and how to stop the loss of 20% of the electricity produced. Finally, it is at the regional scale - in the Amazon - that major problems arise: i the biggest paradox between the abundance of water and social inaccessibility to this resource; ii most of the dams planned for the country will be built there, with the risk of negative impacts already known; iii the obligation of building sluices at all the proposed dams, suggested by the industrial sector in name of the rivers navigation, will serve, in fact, to export commodities produced in the Brazilian central region. An ethical question is, therefore, posed to society and to Brazilian government: are really needed so many hydroelectric dams in the Amazon?

  17. The Use of Advanced Hydroelectric Turbines to Improve Water Quality and Fish Populations

    International Nuclear Information System (INIS)

    Brookshier, P.A.; Cada, G.F.; Flynn, J.V.; Rinehart, B.N.; Sale, M.J.; Sommers, G.L.

    1999-01-01

    Hydroelectric power contributes about 10 percent of the electrical energy generated in the United States, and nearly 20 percent of the worlds electrical energy. It is a renewable energy source that can contribute significantly to reduction of greenhouse gases by offsetting conventional carbon-based electricity generation. However, rather than growing in importance, hydroelectric generation has actually declined in recent years, often as a consequence of environmental concerns centering around (1) restriction of upstream and downstream fish passage by the dam, and (2) alteration of water quality and river flows by the impoundment. The Advanced Hydropower Turbine System (AHTS) Program of the U.S. Department of Energy is developing turbine technology which would help to maximize global hydropower resources while minimizing adverse environmental effects. Major technical goals for the Program are (1) the reduction of mortality among turbine-passed fish to 2 percent or less, compared to current levels ranging up to 30 percent or greater; and (2) development of aerating turbines that would ensure that water discharged from reservoirs has a dissolved oxygen concentration of at least 6 mg/L. These advanced, environmentally friendly turbines would be suitable both for new hydropower installations and for retrofitting at existing dams. Several new turbine designs that have been developed in the initial phases of the AHTS program are described

  18. Advanced, Environmentally Friendly Hydroelectric Turbines for the Restoration of Fish and Water Quality

    International Nuclear Information System (INIS)

    Brookshier, P.A.; Cada, G.F.; Flynn, J.V.; Rinehart, B.N.; Sale, M.J.; Sommers, G.L.

    1999-01-01

    Hydroelectric power contributes about 10 percent of the electrical energy generated in the United States, and nearly 20 percent of the worlds electrical energy. The contribution of hydroelectric generation has declined in recent years, often as a consequence of environmental concerns centering around (1) restriction of upstream and downstream fish passage by the dam, and (2) alteration of water quality and river flows by the impoundment. The Advanced Hydropower Turbine System (AHTS) Program of the U.S. Department of Energy is developing turbine technology which would help to maximize global hydropower resources while minimizing adverse environmental effects. Major technical goals for the Program are (1) the reduction of mortality among turbine-passed fish to 2 percent or less, compared to current levels ranging up to 30 percent or greater; and (2) development of aerating turbines that would ensure that water discharged from reservoirs has a dissolved oxygen concentration of at least 6 mg/L. These advanced, environmentally friendly turbines would be suitable both for new hydropower installations and for retrofitting at existing dams. Several new turbine designs that have been he AHTS program are described

  19. Assessment and statistics of Brazilian hydroelectric power plants: Dam areas versus installed and firm power

    International Nuclear Information System (INIS)

    Caetano de Souza, Antonio Carlos

    2008-01-01

    The Brazilian relief, predominantly composed by small mountains and plateaus, contributed to formation of rivers with high amount of falls. With exception to North-eastern Brazil, the climate of this country are rainy, which contributes to maintain water flows high. These elements are essential to a high hydroelectric potential, contributing to the choice of hydroelectric power plants as the main technology of electricity generation in Brazil. Though this is a renewable source, whose utilized resource is free, dams must to be established which generates a high environmental and social impact. The objective of this study is to evaluate the impact caused by these dams through the use of environmental indexes. These indexes are ratio formed by installed power with dam area of a hydro power plant, and ratio formed by firm power with this dam area. In this study, the greatest media values were found in South, Southeast, and Northeast regions respectively, and the smallest media values were found in North and Mid-West regions, respectively. The greatest encountered media indexes were also found in dams established in the 1950s. In the last six decades, the smallest indexes were registered by dams established in the 1980s. These indexes could be utilized as important instruments for environmental impact assessments, and could enable a dam to be established that depletes an ecosystem as less as possible. (author)

  20. The impact of climate change on hydro-electricity generation

    International Nuclear Information System (INIS)

    Musy, A.; Music, B.; Roy, R.

    2008-01-01

    Hydroelectricity is a clean and renewable energy source for many countries, and is expected to play an important role in future energy supplies. However, the impact of climatic change on hydroelectricity resources is not yet understood. This study provided a critical review of current methods used to determine the potential impacts of climatic change on hydroelectric power production. General circulation models (GCMs) are used to predict future climate conditions under various greenhouse gas (GHG) emissions scenarios. Statistical techniques are then used to down-scale GCM outputs to the appropriate scales needed for hydrological models, which are then used to simulate the effects of climatic change at regional and local scales. Outputs from the models are then used to develop water management models for hydroelectric power production. Observed linear trends in annual precipitation during the twentieth century were provided. The theoretical advantages and disadvantages of various modelling techniques were reviewed. Risk assessment strategies for Hydro-Quebec were also outlined and results of the study will be used to guide research programs for the hydroelectric power industry. refs., tabs., figs

  1. The impact of climate change on hydro-electricity generation

    Energy Technology Data Exchange (ETDEWEB)

    Musy, A.; Music, B.; Roy, R. [Ouranos, Montreal, PQ (Canada)

    2008-07-01

    Hydroelectricity is a clean and renewable energy source for many countries, and is expected to play an important role in future energy supplies. However, the impact of climatic change on hydroelectricity resources is not yet understood. This study provided a critical review of current methods used to determine the potential impacts of climatic change on hydroelectric power production. General circulation models (GCMs) are used to predict future climate conditions under various greenhouse gas (GHG) emissions scenarios. Statistical techniques are then used to down-scale GCM outputs to the appropriate scales needed for hydrological models, which are then used to simulate the effects of climatic change at regional and local scales. Outputs from the models are then used to develop water management models for hydroelectric power production. Observed linear trends in annual precipitation during the twentieth century were provided. The theoretical advantages and disadvantages of various modelling techniques were reviewed. Risk assessment strategies for Hydro-Quebec were also outlined and results of the study will be used to guide research programs for the hydroelectric power industry. refs., tabs., figs.

  2. Mitigation and recovery of methane emissions from tropical hydroelectric dams

    Energy Technology Data Exchange (ETDEWEB)

    Bambace, L.A.W.; Ramos, F.M.; Lima, I.B.T.; Rosa, R.R. [Instituto Nacional de Pesquisas Espaciais (INPE), Sao Jose dos Campos (Brazil)

    2007-06-15

    Tropical hydroelectric reservoirs generally constitute an appreciable source of methane to the atmosphere. This paper proposes simple mitigation and recovery procedures to substantially reduce atmospheric methane emissions from hydroelectric reservoirs. We aim at transforming existing methane stocks of tropical reservoirs into a clean, renewable energy source. The recovered gas methane may be pumped to large consuming centers, stocked locally and burned in gas turbines to generate electricity during high demand periods, or even purified for transport applications. Our simulations show that the use of biogenic methane may increase considerably the energy supply in countries like Brazil. As a result, it would be possible to reduce the need of additional hydroelectric dams, protecting important pristine biomes, and avoiding the resettlement of villages and indigenous reserves. (author)

  3. Miksova hydro-electric power plant is awaiting the fortieths

    International Nuclear Information System (INIS)

    Regula, E.

    2004-01-01

    In this paper the history of cascade of the Miksova hydro-electric power plants (HEPP, in the Slovak Republic) is described. This cascade of power plants consists of the following hydro-electric power plant: Hricov HEPP, Miksova HEPP, Povazska Bystrica HEPP and Nosice HEPP. In the Miksova HEPP are installed three turbo-sets with Kaplan turbine from the CKD Blansko and with synchronous hydro-alternator. Synchronous hydroelectric alternators have maximal output by 31.2 MW. Their installed output is together 93.6 MW and projected production of electric energy is 207 GWh annually. To the end 2003 Miksova HEPP during 40 years has produced together 7,161,342 MWh of electric energy

  4. Incorporating Daily Flood Control Objectives Into a Monthly Stochastic Dynamic Programing Model for a Hydroelectric Complex

    Science.gov (United States)

    Druce, Donald J.

    1990-01-01

    A monthly stochastic dynamic programing model was recently developed and implemented at British Columbia (B.C.) Hydro to provide decision support for short-term energy exports and, if necessary, for flood control on the Peace River in northern British Columbia. The model establishes the marginal cost of supplying energy from the B.C. Hydro system, as well as a monthly operating policy for the G.M. Shrum and Peace Canyon hydroelectric plants and the Williston Lake storage reservoir. A simulation model capable of following the operating policy then determines the probability of refilling Williston Lake and possible spill rates and volumes. Reservoir inflows are input to both models in daily and monthly formats. The results indicate that flood control can be accommodated without sacrificing significant export revenue.

  5. Incorporating daily flood control objectives into a monthly stochastic dynamic programming model for a hydroelectric complex

    Energy Technology Data Exchange (ETDEWEB)

    Druce, D.J. (British Columbia Hydro and Power Authority, Vancouver, British Columbia (Canada))

    1990-01-01

    A monthly stochastic dynamic programing model was recently developed and implemented at British Columbia (B.C.) Hydro to provide decision support for short-term energy exports and, if necessary, for flood control on the Peace River in northern British Columbia. The model established the marginal cost of supplying energy from the B.C. Hydro system, as well as a monthly operating policy for the G.M. Shrum and Peace Canyon hydroelectric plants and the Williston Lake storage reservoir. A simulation model capable of following the operating policy then determines the probability of refilling Williston Lake and possible spill rates and volumes. Reservoir inflows are input to both models in daily and monthly formats. The results indicate that flood control can be accommodated without sacrificing significant export revenue.

  6. Fish passage hydroelectric power plant Linne, Netherlands. Didson measurements; Vispassage waterkrachtcentrale Linne. Didson metingen

    Energy Technology Data Exchange (ETDEWEB)

    Van Keeken, O.A.; Griffioen, A.B. [Institute for Marine Resources and Ecosystem Studies IMARES, Wageningen UR, IJmuiden (Netherlands)

    2011-11-15

    The hydroelectric power plant in the Dutch Maas River near Linne has a fish deflection and passage system. For this study, two evenings in the months of August and September 2011 were dedicated to examining the extent to which fish approached and used the fish passage system. To establish the swimming behavior of the fish, a high-resolution sonar (DIDSON) was used, which generates moving images of fish in turbid waters, to study their behavior. [Dutch] Bij de waterkrachtcentrale in de Maas bij Linne is een visafweer- en geleidingssysteem aangelegd. In deze studie werd op twee avonden verdeeld over de maanden augustus en september 2011 gekeken in hoeverre vissen het visgeleidingssysteem benaderden en gebruikten. Voor het vaststellen van het zwemgedrag van de vissen is gebruik gemaakt van de DIDSON, een hoge resolutie sonar waarmee bewegende beelden kunnen worden gemaakt van vis in troebel water om het gedrag te bestuderen.

  7. Ticks (Acari: Ixodidae on wild animals from the Porto-Primavera Hydroelectric power station area, Brazil

    Directory of Open Access Journals (Sweden)

    Marcelo B Labruna

    2002-12-01

    Full Text Available From June 2000 to June 2001, a total of 741 ticks were collected from 51 free-living wild animals captured at the Porto-Primavera Hydroelectric power station area, located alongside an approximately 180 km course of the Paraná river, between the states of São Paulo and Mato Grosso do Sul, comprising 9 species of 3 genera: Ambly-omma (7 species, Boophilus (1 and Anocentor (1. A total of 421 immature Amblyomma ticks were reared in laboratory until the adult stage, allowing identification of the species. A. cajennense was the most frequent tick species (mostly immature stages collected on 9 host species: Myrmecophaga tridactyla, Tamandua tetradactyla,Cerdocyon thous, Puma concolor,Tayassu tajacu, Mazama gouazoubira,Hydrochaeris hydrochaeris,Alouatta caraya, Cebus apella. Other tick species were less common, generally restricted to certain host taxa.

  8. Ticks (Acari: Ixodidae) on wild animals from the Porto-Primavera Hydroelectric power station area, Brazil.

    Science.gov (United States)

    Labruna, Marcelo B; de Paula, Cátia D; Lima, Thiago F; Sana, Dênis A

    2002-12-01

    From June 2000 to June 2001, a total of 741 ticks were collected from 51 free-living wild animals captured at the Porto-Primavera Hydroelectric power station area, located alongside an approximately 180 km course of the Paran river, between the states of S o Paulo and Mato Grosso do Sul, comprising 9 species of 3 genera: Ambly-omma (7 species), Boophilus (1) and Anocentor (1). A total of 421 immature Amblyomma ticks were reared in laboratory until the adult stage, allowing identification of the species. A. cajennense was the most frequent tick species (mostly immature stages) collected on 9 host species: Myrmecophaga tridactyla, Tamandua tetradactyla,Cerdocyon thous, Puma concolor,Tayassu tajacu, Mazama gouazoubira,Hydrochaeris hydrochaeris,Alouatta caraya, Cebus apella. Other tick species were less common, generally restricted to certain host taxa.

  9. Draft guidelines for the environmental impact study of the Great-Whale hydroelectric project

    International Nuclear Information System (INIS)

    1992-01-01

    The draft guidelines on the preparation of Hydro-Quebec's environmental and social impact statement for the proposed Great Whale River hydroelectric project are detailed. The guidelines cover project justification, description of the biophysical and social environments, project description, impacts of the project, mitigative measures, residual impacts and compensatory measures, environmental monitoring and follow-up programs. The proponent is asked to provide the justification for the project, including its general rationale, and to evaluate the long-term impact of the project. In justifying the project, the proponent should present energy demand and supply scenarios in sufficient detail to demonstrate the need for the project within the context of sustainable development. Long term impacts on the ecosystems of James Bay and Hudson Bay must be examined, as well as broad ecosystemic impacts such as those on the boreal forest, the tundra, as well as such considerations as global warming and changes in biological and cultural diversity

  10. Testing of an acoustic smolt deflection system, Blantyre hydroelectric power scheme

    International Nuclear Information System (INIS)

    1996-01-01

    The aim of this study was to test the effectiveness of an underwater acoustic barrier as a means of preventing the entry of salmon (Salmo salar) and sea trout (Salmo trutta) smolts and other fish into the water intake of a hydro-electric power (HEP) station. A secondary objective was to measure the injury rate of fish passed through the turbine, so that the risk to any fish that penetrated the acoustic barrier could also be determined. The test site, which was a 575kW Kaplan plant located at Blantyre on the R. Clyde, Lanarkshire, was selected as being representative of run-of-river sites currently being developed under the Government's NFFO (Non-Fossil Fuel Obligation) and SRO (Scottish Renewables Order) schemes. A further objective was to disseminate information arising from the project to the scientific and HEP community. (author)

  11. Hydroelectric resources. Inventory of the hydroelectric resources of the Atlantic Coast

    International Nuclear Information System (INIS)

    Arrieta, R.M.; Insignares R, G.

    1987-01-01

    Basically this report gives a clear vision of the possibilities of energy development in the Colombian Atlantic Coast, projects that contemplate a wide range as soon as it refers that is to say to generation ranges, they have been identified at level macro in the Sierra Nevada region and the Peasant with a profitable hydroelectric potential of 631 MW; in the Sinu region, 3 projects were identified with a profitable potential of 1186 MW and in the Magdalena region, was also identified 3 projects whose profitable potential is of 475 MW. At level micro, the carried out studies defined in the same previous regions a series of projects that they necessarily reach the megawatt. The report contains a description of each one of the identified projects and its current situation. It also presents a review of the makers of turbines that exist at the moment in the country

  12. [Hygienic characteristics of work conditions at large Hydroelectric Power Plants with mechanization and automatization].

    Science.gov (United States)

    Iakimova, L D

    1997-01-01

    The article touches upon hygienic problems associated with mechanization and automation of major hydroelectric power stations. The authors present criteria to evaluate work conditions of the main occupations participating in the technologic process of hydroelectric power stations.

  13. 75 FR 66077 - Mahoning Creek Hydroelectric Company, LLC; Notice of Availability of Supplemental Environmental...

    Science.gov (United States)

    2010-10-27

    ... DEPARTMENT OF ENERGY Federal Energy Regulatory Commission [Project No. 12555-004-PA] Mahoning Creek Hydroelectric Company, LLC; Notice of Availability of Supplemental Environmental Assessment... Energy Projects has reviewed the application for an original license for the Mahoning Creek Hydroelectric...

  14. 77 FR 38796 - Alabama Power Company; Holt Hydroelectric Project; Notice of Revised Restricted Service List for...

    Science.gov (United States)

    2012-06-29

    ... Power Company; Holt Hydroelectric Project; Notice of Revised Restricted Service List for a Programmatic... Hydroelectric Project No. 2203. The programmatic agreement, when executed by the Commission, the Alabama SHPO...

  15. Social and environmental impacts of the James Bay hydroelectric project

    International Nuclear Information System (INIS)

    Hornig, J.F.

    1999-01-01

    The book, which is an analysis and not an advocacy, examines the anatomy of the controversy that has swirled around the James Bay project - the La Grande and Great Whale projects combined - from the 1970s to the 1990s, and seeks, in the process, to determine whether there are lessons that can be learned from such an analysis that are applicable to other cases as well as to James Bay itself. The contributors are interested, at one and the same time, in finding ways to integrate the knowledge of natural scientists and social scientists to deepen the understanding of human/environment relations and to link science and policy to encourage a productive dialogue between practitioners and scholars in this increasingly important area of inquiry. The contributor's papers include the following: introduction to the issues; hydroelectric power development at James Bay: establishing a frame of reference; James Bay: environmental considerations for building large hydroelectric dams and reservoirs in Quebec; elevated mercury in fish as a result of the James Bay hydroelectric power development: perception and reality; the Cree people of James Bay: assessing the social impacts of hydroelectric dams and reservoirs; culture, social change, and Cree opposition to the James Bay hydroelectric development; and the impact of James Bay hydroelectric development on the art and craft of the James Bay Cree. The authors of the volume have attempted to stand back and examine just a few of these issues from the perspective of a variety of disciplines, and their purpose is to inform and stimulate thoughtful consideration by providing an overall perspective that might might serve to broaden the context in which specific issues can be debated. refs., 3 tabs., 5 figs

  16. West Kootenay Power Ltd. : Application to sell its hydroelectric generation assets : Decision

    International Nuclear Information System (INIS)

    Ostergaard, P.; Bradley, P.G.; Clemenhagen, B.L.

    2001-01-01

    An investor-owned electric utility providing wholesale and retail service in the West Kootenay and South Okanagan regions of British Columbia, West Kootenay Power Ltd. (WKP) sought the approval from the British Columbia Utilities Commission to sell the four hydroelectric power plants and related facilities to Kootenay River Power Corporation (KRP), and for the purchase by WKP of the output of these plants under a 60-year power purchase agreement. The four hydroelectric plants have a combined rated capacity of approximately 214 MW. Most of the energy and capacity needs of WKP are met via power purchase contracts and agreements, as winter peak loads approach 700 MW. As a result of share purchases, KRP would be 50 per cent owned by each of a provincial Crown Corporation, Columbia Power Corporation (CPC) and a wholly-owned subsidiary of the Columbia Basin Trust (CBT), CBT Energy Inc., if the transactions are allowed to proceed. Three principal agreements are of interest: the Asset Transfer Agreement (ATA), the Share Purchase Agreement (SPA), and the Power Purchase Agreement (PPA). During the review process, two main issues warranted special consideration: the treatment of the proceeds of the sale of assets, and the statutory parameters used by the Commission for the adjudication of the Application. The Application was submitted March 22, 2001, and the public hearing process began May 29, 2001. This Application is unique, in that it contains three agreements that would each require a separate review, but WKP requested that the agreements be considered in their aggregate. The Commission complied, and decided to deny the Application. Unless the terms of the sale are restructured, the transfer of assets to Kootenay River Power Corporation will not be approved by the Commission. Within one month of the date of this decision, WKP is to notify the Commission of its intentions, since it had signified that it would not proceed with the sale unless WKP shareholder receives 100

  17. Proliferation of hydroelectric dams in the Andean Amazon and implications for Andes-Amazon connectivity.

    Science.gov (United States)

    Finer, Matt; Jenkins, Clinton N

    2012-01-01

    Due to rising energy demands and abundant untapped potential, hydropower projects are rapidly increasing in the Neotropics. This is especially true in the wet and rugged Andean Amazon, where regional governments are prioritizing new hydroelectric dams as the centerpiece of long-term energy plans. However, the current planning for hydropower lacks adequate regional and basin-scale assessment of potential ecological impacts. This lack of strategic planning is particularly problematic given the intimate link between the Andes and Amazonian flood plain, together one of the most species rich zones on Earth. We examined the potential ecological impacts, in terms of river connectivity and forest loss, of the planned proliferation of hydroelectric dams across all Andean tributaries of the Amazon River. Considering data on the full portfolios of existing and planned dams, along with data on roads and transmission line systems, we developed a new conceptual framework to estimate the relative impacts of all planned dams. There are plans for 151 new dams greater than 2 MW over the next 20 years, more than a 300% increase. These dams would include five of the six major Andean tributaries of the Amazon. Our ecological impact analysis classified 47% of the potential new dams as high impact and just 19% as low impact. Sixty percent of the dams would cause the first major break in connectivity between protected Andean headwaters and the lowland Amazon. More than 80% would drive deforestation due to new roads, transmission lines, or inundation. We conclude with a discussion of three major policy implications of these findings. 1) There is a critical need for further strategic regional and basin scale evaluation of dams. 2) There is an urgent need for a strategic plan to maintain Andes-Amazon connectivity. 3) Reconsideration of hydropower as a low-impact energy source in the Neotropics.

  18. Integration of Lithium-Ion Battery Storage Systems in Hydroelectric Plants for Supplying Primary Control Reserve

    Directory of Open Access Journals (Sweden)

    Fabio Bignucolo

    2017-01-01

    Full Text Available The ever-growing diffusion of renewables as electrical generation sources is forcing the electrical power system to face new and challenging regulation problems to preserve grid stability. Among these, the primary control reserve is reckoned to be one of the most important issues, since the introduction of generators based on renewable energies and interconnected through static converters, if relieved from the primary reserve contribution, reduces both the system inertia and the available power reserve in case of network events involving frequency perturbations. In this scenario, renewable plants such as hydroelectric run-of-river generators could be required to provide the primary control reserve ancillary service. In this paper, the integration between a multi-unit run-of-river power plant and a lithium-ion based battery storage system is investigated, suitably accounting for the ancillary service characteristics as required by present grid codes. The storage system is studied in terms of maximum economic profitability, taking into account its operating constraints. Dynamic simulations are carried out within the DIgSILENT PowerFactory 2016 software environment in order to analyse the plant response in case of network frequency contingencies, comparing the pure hydroelectric plant with the hybrid one, in which the primary reserve is partially or completely supplied by the storage system. Results confirm that the battery storage system response to frequency perturbations is clearly faster and more accurate during the transient phase compared to a traditional plant, since time delays due to hydraulic and mechanical regulations are overpassed. A case study, based on data from an existing hydropower plant and referring to the Italian context in terms of operational constraints and ancillary service remuneration, is presented.

  19. Proliferation of hydroelectric dams in the Andean Amazon and implications for Andes-Amazon connectivity.

    Directory of Open Access Journals (Sweden)

    Matt Finer

    Full Text Available Due to rising energy demands and abundant untapped potential, hydropower projects are rapidly increasing in the Neotropics. This is especially true in the wet and rugged Andean Amazon, where regional governments are prioritizing new hydroelectric dams as the centerpiece of long-term energy plans. However, the current planning for hydropower lacks adequate regional and basin-scale assessment of potential ecological impacts. This lack of strategic planning is particularly problematic given the intimate link between the Andes and Amazonian flood plain, together one of the most species rich zones on Earth. We examined the potential ecological impacts, in terms of river connectivity and forest loss, of the planned proliferation of hydroelectric dams across all Andean tributaries of the Amazon River. Considering data on the full portfolios of existing and planned dams, along with data on roads and transmission line systems, we developed a new conceptual framework to estimate the relative impacts of all planned dams. There are plans for 151 new dams greater than 2 MW over the next 20 years, more than a 300% increase. These dams would include five of the six major Andean tributaries of the Amazon. Our ecological impact analysis classified 47% of the potential new dams as high impact and just 19% as low impact. Sixty percent of the dams would cause the first major break in connectivity between protected Andean headwaters and the lowland Amazon. More than 80% would drive deforestation due to new roads, transmission lines, or inundation. We conclude with a discussion of three major policy implications of these findings. 1 There is a critical need for further strategic regional and basin scale evaluation of dams. 2 There is an urgent need for a strategic plan to maintain Andes-Amazon connectivity. 3 Reconsideration of hydropower as a low-impact energy source in the Neotropics.

  20. Report on the renewal of the hydro-electric concessions

    International Nuclear Information System (INIS)

    2006-11-01

    The administrative procedures of the renewable of the hydro-electric concessions in France is a real problem, leading to too long time of the case files examination. This mission aimed to identify the technical and financial criteria on which the decision maker will base his choice to give the concessions renewal. This report exposes the evaluation and the recommendations of the mission. The first part establishes an evaluation of the situation of the hydro-electric concessions and the today renewal procedures. The second part presents a analysis of this situation and the recommendations. The last part brings the conclusions. (A.L.B.)

  1. 77 FR 14516 - Alabama Power Company, Martin Dam Hydroelectric Project; Notice of Proposed Revised Restricted...

    Science.gov (United States)

    2012-03-12

    ... Power Company, Martin Dam Hydroelectric Project; Notice of Proposed Revised Restricted Service List for... for inclusion in, the National Register of Historic Places at the Martin Dam Hydroelectric Project...)). The Commission's responsibilities pursuant to section 106 for the Martin Dam Hydroelectric Project...

  2. 77 FR 38796 - Georgia Power Company; Bartletts Ferry Hydroelectric Project; Notice of Revised Restricted...

    Science.gov (United States)

    2012-06-29

    ... Alabama] Georgia Power Company; Bartletts Ferry Hydroelectric Project; Notice of Revised Restricted... by issuance of a new license for the Bartletts Ferry Hydroelectric Project No. 485. The programmatic... Hydroelectric Project. On June 14, 2012, the Kialegee Tribal Town requested a revision to the restricted service...

  3. 76 FR 75543 - Castle Creek Hydroelectric Project; Notice of Preliminary Permit Application Accepted for Filing...

    Science.gov (United States)

    2011-12-02

    ... Hydroelectric Project; Notice of Preliminary Permit Application Accepted for Filing and Soliciting Comments... (FPA), proposing to study the feasibility of the Castle Creek Hydroelectric Project to be located on... be located adjacent to the original hydroelectric plant, with a single shaft Pelton turbine...

  4. 76 FR 76156 - Grand Coulee Project Hydroelectric Authority; Notice of Preliminary Permit Application Accepted...

    Science.gov (United States)

    2011-12-06

    ... Project Hydroelectric Authority; Notice of Preliminary Permit Application Accepted for Filing and... Federal Power Act (FPA), proposing to study the feasibility of the Scooteney Outlet Drop Hydroelectric..., Grand Coulee Project Hydroelectric Authority, P.O. Box 219, Ephrata, WA 98823; phone: (509) 754-2227...

  5. 75 FR 63450 - Wilkesboro Hydroelectric Company; Notice of Application Ready for Environmental Analysis and...

    Science.gov (United States)

    2010-10-15

    ... Hydroelectric Company; Notice of Application Ready for Environmental Analysis and Soliciting Comments... hydroelectric application has been filed with the Commission and is available for public inspection. a. Type of.... Applicant: Wilkesboro Hydroelectric Company. e. Name of Project: W. Kerr Scott Hydropower Project. f...

  6. 77 FR 7143 - Grand Coulee Project Hydroelectric Authority; Notice of Preliminary Permit Application Accepted...

    Science.gov (United States)

    2012-02-10

    ... Project Hydroelectric Authority; Notice of Preliminary Permit Application Accepted for Filing and Soliciting Comments and Motions To Intervene On January 13, 2012, the Grand Coulee Project Hydroelectric... study the feasibility of the P.E. 46A Wasteway Hydroelectric Project, to be located on the P.E. 46A...

  7. 75 FR 77862 - FFP Missouri 16, LLC, Solia 9 Hydroelectric, LLC; Notice of Competing Preliminary Permit...

    Science.gov (United States)

    2010-12-14

    ... Missouri 16, LLC, Solia 9 Hydroelectric, LLC; Notice of Competing Preliminary Permit Applications Accepted.... On August 6, 2010, FFP Missouri 16, LLC (FFP) and Solia 9 Hydroelectric, LLC filed preliminary permit...-2822. Solia 9 Hydroelectric's proposed Lock and Dam 15 Hydropower Project (Project No. 13827-000) would...

  8. 75 FR 6371 - Jordan Hydroelectric Limited Partnership; Notice of Application Accepted for Filing and...

    Science.gov (United States)

    2010-02-09

    ... Hydroelectric Limited Partnership; Notice of Application Accepted for Filing and Soliciting Motions To Intervene and Protests February 2, 2010. Take notice that the following hydroelectric application has been filed... License b. Project No.: P-12740-003 c. Date filed: July 13, 2009 d. Applicant: Jordan Hydroelectric...

  9. 75 FR 37790 - Mahoning Creek Hydroelectric Company, LLC; Notice of Intent To Issue a Supplemental Environmental...

    Science.gov (United States)

    2010-06-30

    ... Hydroelectric Company, LLC; Notice of Intent To Issue a Supplemental Environmental Assessment for the Proposed Mahoning Creek Hydroelectric Project June 23, 2010. On March 23, 2010, Commission staff issued an Environmental Assessment (EA) for the proposed Mahoning Creek Hydroelectric Project. On April 22, 2010, the U.S...

  10. 75 FR 35020 - Wilkesboro Hydroelectric Company, LLC; Notice Soliciting Scoping Comments

    Science.gov (United States)

    2010-06-21

    ... Hydroelectric Company, LLC; Notice Soliciting Scoping Comments June 15, 2010 Take notice that the following hydroelectric application has been filed with the Commission and is available for public inspection. a. Type of.... Applicant: Wilkesboro Hydroelectric Company, LLC. e. Name of Project: W. Kerr Scott Hydropower Project. f...

  11. 18 CFR 420.51 - Hydroelectric power plant water use charges.

    Science.gov (United States)

    2010-04-01

    ... 18 Conservation of Power and Water Resources 2 2010-04-01 2010-04-01 false Hydroelectric power... BASIN COMMISSION ADMINISTRATIVE MANUAL BASIN REGULATIONS-WATER SUPPLY CHARGES Hydroelectric Power Water Use Charges § 420.51 Hydroelectric power plant water use charges. (a) Annual base charges. Owners of...

  12. 76 FR 76153 - Grand Coulee Project Hydroelectric Authority; Notice of Preliminary Permit Application Accepted...

    Science.gov (United States)

    2011-12-06

    ... Project Hydroelectric Authority; Notice of Preliminary Permit Application Accepted for Filing and... Hydroelectric Project (Scooteney Inlet Project or project) to be located on the Potholes East Canal, which is an..., Grand Coulee Project Hydroelectric Authority, P.O. Box 219, Ephrata, WA 98823; phone: (509) 754-2227...

  13. 76 FR 57729 - Boundary Hydroelectric Project; Sullivan Creek Project; Notice of Availability of the Final...

    Science.gov (United States)

    2011-09-16

    ...-015] Boundary Hydroelectric Project; Sullivan Creek Project; Notice of Availability of the Final Environmental Impact Statement for the Relicensing of the Boundary Hydroelectric Project and the Surrender of... reviewed the applications for license for the Boundary Hydroelectric Project (FERC No. 2144-38), and the...

  14. 77 FR 7574 - Grand Coulee Project Hydroelectric Authority; Notice of Preliminary Permit Application Accepted...

    Science.gov (United States)

    2012-02-13

    ... Project Hydroelectric Authority; Notice of Preliminary Permit Application Accepted for Filing and Soliciting Comments and Motions To Intervene On January 13, 2012, the Grand Coulee Project Hydroelectric... study the feasibility of the P.E. Scooteney Wasteway Hydroelectric Project, to be located on the P.E...

  15. 78 FR 5798 - Ceresco Hydroelectric Dam, LLC; Notice of Preliminary Permit Application Accepted for Filing and...

    Science.gov (United States)

    2013-01-28

    ... Hydroelectric Dam, LLC; Notice of Preliminary Permit Application Accepted for Filing and Soliciting Comments, Motions To Intervene, and Competing Applications On October 19, 2012, Ceresco Hydroelectric Dam, LLC...), proposing to study the feasibility of the Ceresco Hydroelectric Project (Ceresco Project or project) to be...

  16. 75 FR 352 - Enloe Hydroelectric Project; Notice of Application Ready for Environmental Analysis and...

    Science.gov (United States)

    2010-01-05

    ... Hydroelectric Project; Notice of Application Ready for Environmental Analysis and Soliciting Comments... hydroelectric application has been filed with the Commission and is available for public inspection. a. Type of... Utility District No. 1 of Okanogan County. e. Name of Project: Enloe Hydroelectric Project. f. Location...

  17. Estimation of free-flowingmicro hydroelectric power stations in Krasnoyarsk region

    OpenAIRE

    Kachina, E.; Botcharova, E.

    2010-01-01

    The external factors defining expediency of using micro hydroelectric power stations are considered. Exploration of areas of Krasnoyarsk region, which are suitable for usage of micro hydroelectric power stations is carried out. The market of primary real small hydroelectric engineering in Krasnoyarsk region is defined.

  18. 76 FR 46793 - Jordan Hydroelectric Limited Partnership; Notice of Availability of Environmental Assessment

    Science.gov (United States)

    2011-08-03

    ... Hydroelectric Limited Partnership; Notice of Availability of Environmental Assessment In accordance with the... for an original license for the 3.0-megawatt (MW) Flannagan Hydroelectric Project located on the Pound..., NE., Room 1-A, Washington, DC 20426. Please affix ``Flannagan Hydroelectric Project No. 12740-003...

  19. 76 FR 49462 - Newfound Hydroelectric Company, KTZ Hydro, LLC; Notice of Application for Transfer of License...

    Science.gov (United States)

    2011-08-10

    ... Hydroelectric Company, KTZ Hydro, LLC; Notice of Application for Transfer of License, and Soliciting Comments and Motions To Intervene On July 25, 2011, Newfound Hydroelectric Company (transferor) and KTZ Hydro, LLC (transferee) filed an application for transfer of license for the Newfound Hydroelectric Project...

  20. 78 FR 39725 - Grenada Lake Hydroelectric Project; Notice Of Proposed Restricted Service List for a Programmatic...

    Science.gov (United States)

    2013-07-02

    ...-001--Mississippi] Grenada Lake Hydroelectric Project; Notice Of Proposed Restricted Service List for a... license for the proposed Grenada Lake Hydroelectric Project No. 13702. The Programmatic Agreement, when... Grenada Lake Hydroelectric Project, the U.S. Army Corps of Engineers, the Choctaw Nation of Oklahoma, the...

  1. 75 FR 22122 - Gibson Dam Hydroelectric Company, LLC; Notice of Application Accepted for Filing and Soliciting...

    Science.gov (United States)

    2010-04-27

    ... Hydroelectric Company, LLC; Notice of Application Accepted for Filing and Soliciting Motions To Intervene and Protests April 20, 2010. Take notice that the following hydroelectric application has been filed with the.... Project No.: P-12478-003. c. Date filed: August 28, 2009. d. Applicant: Gibson Dam Hydroelectric Company...

  2. 78 FR 48670 - Rivermill Hydroelectric, Inc., New Hampshire Hydro Associates; Notice of Transfer of Exemption

    Science.gov (United States)

    2013-08-09

    ... Hydroelectric, Inc., New Hampshire Hydro Associates; Notice of Transfer of Exemption August 5, 2013. 1. By letter filed July 19, 2013, Rivermill Hydroelectric, Inc. and New Hampshire Hydro Associates informed the... Project, FERC No. 9403. All correspondence should be forwarded to Rivermill Hydroelectric, Inc., c/o Essex...

  3. Wanaket Wildlife Area Management Plan : Five-Year Plan for Protecting, Enhancing, and Mitigating Wildlife Habitat Losses for the McNary Hydroelectric Facility.

    Energy Technology Data Exchange (ETDEWEB)

    Confederated Tribes of the Umatilla Indian Reservation Wildlife Program

    2001-09-01

    The Confederated Tribes of the Umatilla Indian Reservation (CTUIR) propose to continue to protect, enhance, and mitigate wildlife and wildlife habitat at the Wanaket Wildlife Area. The Wanaket Wildlife Area was approved as a Columbia River Basin Wildlife Mitigation Project by the Bonneville Power Administration (BPA) and Northwest Power Planning Council (NWPPC) in 1993. This management plan will provide an update of the original management plan approved by BPA in 1995. Wanaket will contribute towards meeting BPA's obligation to compensate for wildlife habitat losses resulting from the construction of the McNary Hydroelectric facility on the Columbia River. By funding the enhancement and operation and maintenance of the Wanaket Wildlife Area, BPA will receive credit towards their mitigation debt. The purpose of the Wanaket Wildlife Area management plan update is to provide programmatic and site-specific standards and guidelines on how the Wanaket Wildlife Area will be managed over the next five years. This plan provides overall guidance on both short and long term activities that will move the area towards the goals, objectives, and desired future conditions for the planning area. The plan will incorporate managed and protected wildlife and wildlife habitat, including operations and maintenance, enhancements, and access and travel management. Specific project objectives are related to protection and enhancement of wildlife habitats and are expressed in terms of habitat units (HU's). Habitat units were developed by the US Fish and Wildlife Service's Habitat Evaluation Procedures (HEP), and are designed to track habitat gains and/or losses associated with mitigation and/or development projects. Habitat Units for a given species are a product of habitat quantity (expressed in acres) and habitat quality estimates. Habitat quality estimates are developed using Habitat Suitability Indices (HSI). These indices are based on quantifiable habitat features such

  4. Exploitation of hydropower potentials. EnBW operates run-of-river power plants in Baden-Wuerttemberg; Wasserkraft-Potenziale ausschoepfen. EnBW betreibt in Baden-Wuerttemberg Laufwasserkraftanlagen

    Energy Technology Data Exchange (ETDEWEB)

    Frey, Martin

    2013-06-01

    For about 100 years power is generated from hydroelectric power on the river Neckar (Federal Republic of Germany). A total hydropower capacity of about 100 megawatts already is installed at the Neckar river. In the Federal State Baden-Wuerttemberg there is certainly the potential for the construction and modernization of hydroelectric power plants. Under this aspect, the contribution under consideration reports on the reconstruction of the run-of-river power plant Schwabenheim nearby Heidelberg (Federal Republic of Germany).

  5. Impact on the aquatic environment of hydro-peaking in hydroelectric plants

    International Nuclear Information System (INIS)

    Sabaton, C.; Lauters, F.; Valentin, S.

    1996-01-01

    There are a number of types of hydroelectric installations on French rivers. Some of these intermittently turbine water stored in dammed reservoirs, in order to use available reserves at the most opportune moment for power generation. These plants, run under 'hydro-peaking' management procedures, cause variations in discharge in river sections downstream of the restitution, on a daily or weekly scale. To answer questions concerning the impact of such variations in discharge on the aquatic environment, EDF launched a research program aimed at describing and better understanding the physical and biological phenomena related to hydro-peaking and assessing the possible impact of this type of plant management on French streams. Seven sites subjects to hydro-peaking were studied on rivers with mean flow rates lower than 20 m 3 /s (which corresponds to over 65 % of EDF hydro-peaking sites). Four themes in particular were examined: hydraulic characterization of hydro-peaking, modifications in thermal regime and water quality, response of benthic invertebrates and response of fish populations to hydro-peaking. For fish as well as for invertebrates, the role of the base discharge - in the absence of peaking flow - and that of the morphology of the river bed (and, in particular, the presence of shelter for fish) during periods of strong discharge were clearly highlighted. Impact assessment requires a precise diagnosis of the state of biocenoses. To carry out such a diagnosis, one must reason in terms of species, life phase (particularly the most sensitive phases) and population structure as well as the type of stream and the faunizone involved. A risk assessment is possible by means of simultaneous study of the morphology of the river bed and the response of the signal generated by hydro-peaking in terms of hydrology and physical characteristics downstream of the restitution. (authors)

  6. Fish entrainment and mortality at the French Landing Hydroelectric Powerhouse

    International Nuclear Information System (INIS)

    Sundquist, M.J.

    1991-01-01

    This paper is a case study which explains the fish mortality study performed and results obtained at an existing hydroelectric powerhouse in Michigan. Undertaken in 1989 and 1990, this study provides data for determining effects of turbine passage on area fish

  7. Micro hydroelectric power plant development in the west region of ...

    African Journals Online (AJOL)

    The objective of the present work is to characterise the state of ten Micro Hydroelectric Power Plants (MHPPs) installed in the west region of Cameroon, in preparation for their modernization. The work was carried out between January 2006 and December 2008. Each site was visited at least once a month. During these ...

  8. Climate change impacts on high-elevation hydroelectricity in California

    Science.gov (United States)

    Madani, Kaveh; Guégan, Marion; Uvo, Cintia B.

    2014-03-01

    While only about 30% of California's usable water storage capacity lies at higher elevations, high-elevation (above 300 m) hydropower units generate, on average, 74% of California's in-state hydroelectricity. In general, high-elevation plants have small man-made reservoirs and rely mainly on snowpack. Their low built-in storage capacity is a concern with regard to climate warming. Snowmelt is expected to shift to earlier in the year, and the system may not be able to store sufficient water for release in high-demand periods. Previous studies have explored the climate warming effects on California's high-elevation hydropower by focusing on the supply side (exploring the effects of hydrological changes on generation and revenues) ignoring the warming effects on hydroelectricity demand and pricing. This study extends the previous work by simultaneous consideration of climate change effects on high-elevation hydropower supply and pricing in California. The California's Energy-Based Hydropower Optimization Model (EBHOM 2.0) is applied to evaluate the adaptability of California's high-elevation hydropower system to climate warming, considering the warming effects on hydroelectricity supply and pricing. The model's results relative to energy generation, energy spills, reservoir energy storage, and average shadow prices of energy generation and storage capacity expansion are examined and discussed. These results are compared with previous studies to emphasize the need to consider climate change effects on hydroelectricity demand and pricing when exploring the effects of climate change on hydropower operations.

  9. 77 FR 24949 - Red River Lock & Dam No. 4 Hydroelectric Project; BOST4 Hydroelectric LLC; Notice of Proposed...

    Science.gov (United States)

    2012-04-26

    ... particular phase or issue in a proceeding. The restricted service list should contain the names of persons on..., or eligible for inclusion in, the National Register of Historic Places that could be affected by.... Linda Langley, Coushatta of Culture, Recreation & Tourism, P.O. Tribe of Louisiana, P.O. Box Box 44247...

  10. Obstacles to hydroelectric power. VDI conference on chances of hydroelectric power - conservation and environmental protection in conflict

    International Nuclear Information System (INIS)

    Sauer, H.D.

    1994-01-01

    Hydroelectric power is one of the most efficient energy sources and presents no CO 2 pollution problem, but there are obstacles as was shown at a VDI conference. Regional landscape conservation interests are in conflict with global environmental protection considerations. (orig.) [de

  11. Environmental evaluation of Turkey's transboundary rivers' hydropower systems

    International Nuclear Information System (INIS)

    Berkun, M.

    2010-01-01

    The hydroelectric power and potential environmental impacts of hydroelectric projects in 2 transboundary rivers in Turkey were assessed. The southeastern Anatolia project (GAP) is expected to encompass 27 dams and 19 hydroelectric power plants. The large-scale project will increase domestic electricity production and help to provide irrigation for large agricultural schemes. The Coruh project will consist of 27 dams and hydroelectric power plants, which are expected to have serious environmental impacts in both upstream Turkey and downstream Georgia. A slowing down of each river's velocity will cause changes in sediment transport, while the storage of water in large reservoirs will alter water quality and cause changes in local micro-climates. Irrigation methods may cause soil erosion and salinization. The construction of 2 GAP dams on the Tigris and Euphrates rivers has caused protest from Syria and Iraq. Economic development in the regions caused by the proposed hydroelectric projects is expected to have significant environmental impacts on woodland and grassland areas. The projects are expected to adversely affect threatened plant, mammal, and fish species. More detailed cumulative impact and environmental impact assessments are needed to evaluate the economic, environmental, and social problems that are likely to arise as a result of the projects. 17 refs., 3 tabs., 6 figs.

  12. The Indian coastline: Processes and landforms.

    Digital Repository Service at National Institute of Oceanography (India)

    Mukhopadhyay, R.; Karisiddaiah, S.M.

    ) Worldwide delivery of river sediments to oceans. Journal of Geology, 91, 1-21. Mukhopadhyay R, Karisiddaiah SM, Ghosh AK (2012) Geodynamics of Amirante Ridge and Trench complex, western Indian Ocean. International Geology Review, 54, 1, 81- 92 Murthy...

  13. 77 FR 41980 - Uniontown Hydro, LLC, Project No. 12958-001-Kentucky and Indiana, Uniontown Hydroelectric Project...

    Science.gov (United States)

    2012-07-17

    ...-001-Kentucky and Indiana, Uniontown Hydroelectric Project; Newburgh Hydro, LLC, Project No. 12962-001-Kentucky and Indiana, Newburgh Hydroelectric Project; Notice of Revised Restricted Service List for a... licenses for the proposed Uniontown Hydroelectric Project and Newburgh Hydroelectric Project. The...

  14. Dissolved oxygen analysis for hydropower additions on the Illinois River

    International Nuclear Information System (INIS)

    Sundquist, M.J.; Elver, S.A.

    1993-01-01

    The Illinois Waterway is comprised of a system of eight locks along the Illinois River, the Des Plaines River, and the Chicago Sanitary Ship Canal which allow commercial barge traffic between the Mississippi River and Lake Michigan at the City of Chicago. Opportunities for production of hydroelectric power is present at several of these lock and dams. This paper presents the field study and computer simulation conducted to determine the feasibility of constructing hydroelectric powerhouses on two of these lock and dams. So as not to degrade recent improvements to water quality, the Federal Energy Regulatory Commission (FERC), in issuing the construction and operating licenses for these two hydroelectric facilities, requires the hydropower additions to not reduce the dissolved oxygen (D.O.) level downstream of the hydroelectric facilities below 6 parts per million (ppm). Presently, the waterway discharge passes through taintor gates at both of these lock and dam facilities which creates aeration. The addition of hydroelectric powerhouses would divert water from these spillways through generation equipment; consequently, the spillway aeration would not occur. The purpose of the study was to determine the amount of power generation from these facilities, given the existing waterway water quality and the FERC D.O. criteria. A computer simulation generation analysis was conducted to provide a database of the waterway water quality. A four-month extensive field collection survey was conducted over the 63 kilometer (39 mile) reach of the waterway which comprises the two downstream pools of the Brandon Road and Dresden Island projects, and 3 kilometers (2 miles) upstream of the Brandon Road Project. The analysis revealed that the hydroelectric additions were economically feasible and are an example of how the benefits of hydroelectric development can be balanced with environmental concerns

  15. Downstream environmental impacts of dams: case study Tucurui Hydroelectric Plant, PA; Impactos ambientais a jusante de hidreletricas: o caso da usina de Tucurui, PA

    Energy Technology Data Exchange (ETDEWEB)

    Manyari, Waleska Valenca

    2007-12-15

    The hydroelectric resources of the Amazon region are considered a competitive alternative despite the structural problems they entail. Concerning the latter, plans to build large-scale dams in the region have drawn criticism mainly on account of the loss of forest cover in areas flooded by dam reservoirs and the conflicts concerning the relocation of indigenous and riverside communities in the region. This study seeks to contribute to better understanding of the environmental issue in the Amazon by focusing attention on the downstream effects of dams, which have large-scale, hitherto neglected ecological repercussions. The impact of dams extends well beyond the area surrounding the artificial lakes they create, harming rich Amazon wetland ecosystems. The morphology of dammed rivers changes in response to new inputs of energy and matter, which may in turn destroy certain biotypes. This is a remote-sensing-based case study of the Tucurui hydroelectric scheme in the Amazon state of Para. Attention is drawn to the need to take into account effects on alluvial rivers downstream from hydroelectric power plants when it comes to making planning decisions, as part of a sustainable energy policy. (author)

  16. Turbulence at Hydroelectric Power Plants and its Potential Effects on Fish.

    Energy Technology Data Exchange (ETDEWEB)

    Cada, Glenn F.; Odeh, Mufeed

    2001-01-01

    The fundamental influence of fluid dynamics on aquatic organisms is receiving increasing attention among aquatic ecologists. For example, the importance of turbulence to ocean plankton has long been a subject of investigation (Peters and Redondo 1997). More recently, studies have begun to emerge that explicitly consider the effects of shear and turbulence on freshwater invertebrates (Statzner et al. 1988; Hart et al. 1996) and fishes (Pavlov et al. 1994, 1995). Hydraulic shear stress and turbulence are interdependent natural fluid phenomena that are important to fish, and consequently it is important to develop an understanding of how fish sense, react to, and perhaps utilize these phenomena under normal river flows. The appropriate reaction to turbulence may promote movement of migratory fish or prevent displacement of resident fish. It has been suggested that one of the adverse effects of flow regulation by hydroelectric projects is the reduction of normal turbulence, particularly in the headwaters of reservoirs, which can lead to disorientation and slowing of migration (Williams et al. 1996; Coutant et al. 1997; Coutant 1998). On the other hand, greatly elevated levels of shear and turbulence may be injurious to fish; injuries can range from removal of the mucous layer on the body surface to descaling to torn opercula, popped eyes, and decapitation (Neitzel et al. 2000a,b). Damaging levels of fluid stress can occur in a variety of circumstances in both natural and man-made environments. This paper discusses the effects of shear stress and turbulence on fish, with an emphasis on potentially damaging levels in man-made environments. It defines these phenomena, describes studies that have been conducted to understand their effects, and identifies gaps in our knowledge. In particular, this report reviews the available information on the levels of turbulence that can occur within hydroelectric power plants, and the associated biological effects. The final section

  17. Influence of environmental variables on diffusive greenhouse gas fluxes at hydroelectric reservoirs in Brazil.

    Science.gov (United States)

    Rogério, J P; Santos, M A; Santos, E O

    2013-11-01

    For almost two decades, studies have been under way in Brazil, showing how hydroelectric reservoirs produce biogenic gases, mainly methane (CH4) and carbon dioxide (CO2), through the organic decomposition of flooded biomass. This somewhat complex phenomenon is due to a set of variables with differing levels of interdependence that directly or indirectly affect greenhouse gas (GHG) emissions. The purpose of this paper is to determine, through a statistical data analysis, the relation between CO2, CH4 diffusive fluxes and environmental variables at the Furnas, Itumbiara and Serra da Mesa hydroelectric reservoirs, located in the Cerrado biome on Brazil's high central plateau. The choice of this region was prompted by its importance in the national context, covering an area of some two million square kilometers, encompassing two major river basins (Paraná and Tocantins-Araguaia), with the largest installed power generation capacity in Brazil, together accounting for around 23% of Brazilian territory. This study shows that CH4 presented a moderate negative correlation between CO2 and depth. Additionally, a moderate positive correlation was noted for pH, water temperature and wind. The CO2 presented a moderate negative correlation for pH, wind speed, water temperature and air temperature. Additionally, a moderate positive correlation was noted for CO2 and water temperature. The complexity of the emission phenomenon is unlikely to occur through a simultaneous understanding of all the factors, due to difficulties in accessing and analyzing all the variables that have real, direct effects on GHG production and emission.

  18. Influence of environmental variables on diffusive greenhouse gas fluxes at hydroelectric reservoirs in Brazil

    Directory of Open Access Journals (Sweden)

    JP. Rogério

    Full Text Available For almost two decades, studies have been under way in Brazil, showing how hydroelectric reservoirs produce biogenic gases, mainly methane (CH4 and carbon dioxide (CO2, through the organic decomposition of flooded biomass. This somewhat complex phenomenon is due to a set of variables with differing levels of interdependence that directly or indirectly affect greenhouse gas (GHG emissions. The purpose of this paper is to determine, through a statistical data analysis, the relation between CO2, CH4 diffusive fluxes and environmental variables at the Furnas, Itumbiara and Serra da Mesa hydroelectric reservoirs, located in the Cerrado biome on Brazil's high central plateau. The choice of this region was prompted by its importance in the national context, covering an area of some two million square kilometers, encompassing two major river basins (Paraná and Tocantins-Araguaia, with the largest installed power generation capacity in Brazil, together accounting for around 23% of Brazilian territory. This study shows that CH4 presented a moderate negative correlation between CO2 and depth. Additionally, a moderate positive correlation was noted for pH, water temperature and wind. The CO2 presented a moderate negative correlation for pH, wind speed, water temperature and air temperature. Additionally, a moderate positive correlation was noted for CO2 and water temperature. The complexity of the emission phenomenon is unlikely to occur through a simultaneous understanding of all the factors, due to difficulties in accessing and analyzing all the variables that have real, direct effects on GHG production and emission.

  19. Active tectonics and Holocene versus modern catchment erosion rates at 300 MW Baspa II hydroelectric power plant (NW Himalaya, India)

    Science.gov (United States)

    Draganits, Erich; Grasemann, Bernhard; Gier, Susanne; Hofmann, Christa-Charlotte; Janda, Christoph; Bookhagen, Bodo; Preh, Alexander

    2015-04-01

    The Baspa River is one of the most important tributaries to the Sutlej River in the NW Himalaya (India). Its catchment is 1116 km2 in size, ranges from c. 6400 m asl to 1770 m asl and contains India's largest private hydroelectric facility, the 300 MW Baspa II. Geologically, the hydroelectric installation is located in the Higher Himalayan Crystalline, just above the active Karcham Normal Fault, which is reactivating the Early Miocene Main Central Thrust, one of the principal Himalayan faults. The area is seismically active and mass-movements are common. Around 8200 yrs BP the Baspa was dammed by a rock-avalanche dam, leading to the formation of the originally c. 260 m deep palaeo-lake Sangla palaeo-lake. Detailed sedimentological investigations and radiocarbon dating indicate that the palaeo-lake was completely filled with sediments until c. 5100 yrs BP. This makes the Sangla palaeo-lake to a very rare example of a mass-movement dam with very long duration and its lacustrine sediments represent a valuable archive for geological processes and environmental proxies within the Baspa catchment during the c. 3100 years of its existence - which are the aim of our study. At least 5 levels of soft-sediment deformation have been recorded in the exposed part of the lacustrine sediments of Sangla palaeo-lake, including brecciated laminae, overturned laminae, folds, faults and deformation bands, separated by undeformed deposits. They are interpreted as seismites, indicating at least 5 earthquakes within 2500 years strong enough to cause liquefaction. The 300 MW Baspa II hydro-electric power plant has been built exactly on top of this palaeo-lake. This special location represents a very rare possibility to evaluate the short-term, river load and hydrological parameters measured during the planning and operational stages of Baspa II with the long-term parameters gained from the palaeo-lake sediments from the catchment. This data show that the Mid-Holocene erosion rates of the

  20. Present status and perspectives for hydroelectric power in world

    International Nuclear Information System (INIS)

    Malquori, E.

    1991-01-01

    In the note a review of the present status and perspectives of hydroelectric power in the world is introduced. The present status regards, in chronological order, the last decade, as to say the works carried out in the 80ies whereas the perspectives regard the next twenty years as to say until 2010. The mentioned electric power potentiality refers to pure generation plants of great, middle and small size and to what could be achieved by already existing plants after changes and/or replacements and improvement of the machinery. Beside the figures regarding powers, great generation and pumping plants whose contribution has been and will be remarkable have been properly mentioned. The Italian contribution - civil works design, construction, and machinery supply - in the last hydroelectric development is briefly mentioned with particular reference to the developing countries

  1. Model documentation report: Short-Term Hydroelectric Generation Model

    International Nuclear Information System (INIS)

    1993-08-01

    The purpose of this report is to define the objectives of the Short- Term Hydroelectric Generation Model (STHGM), describe its basic approach, and to provide details on the model structure. This report is intended as a reference document for model analysts, users, and the general public. Documentation of the model is in accordance with the Energy Information Administration's (AYE) legal obligation to provide adequate documentation in support of its models (Public Law 94-385, Section 57.b.2). The STHGM performs a short-term (18 to 27- month) forecast of hydroelectric generation in the United States using an autoregressive integrated moving average (UREMIA) time series model with precipitation as an explanatory variable. The model results are used as input for the short-term Energy Outlook

  2. The Amazon Hydroelectric Dams, an Internal Geopolitical Issue in Brazil

    International Nuclear Information System (INIS)

    Broggio, Celine; Droulers, Martine; Pallamar, Juan-Pablo

    2017-01-01

    This paper develops a geopolitical analysis of dams and hydroelectric plants in the Brazilian Amazon since the mid-2000's. The implementation of these projects has provoked tensions within the federal government under the presidency of the Workers' Party and accelerated the erosion of the ideological and political platform called 'socio-environmentalism', a situation that has led to the break-up of the coalition leading to the political crisis of 2016 and the impeachment of President Dilma Rousseff. From a regional point of view, the dispute occurred in very different terms in the case of the Madeira hydroelectric power stations (Santo Antonio and Jirau in Rondonia) and in the case of the Xingu dam (Belo Monte in Para), worldwide covered by the media

  3. Hydroelectric dams in Amazon as source of GHG

    International Nuclear Information System (INIS)

    Rosa, L.P.; Schaeffer, R.; Santos, M.A.

    1996-01-01

    A recent paper by Fearnside points out that hydroelectric development in Amazonia is a significant source of greenhouse gases (GHG) emissions. This conclusion is in contrast to the common belief that hydroelectric dams are better than fossil fuel use in electric power generation, from the view point of GHG emissions. The authors have considered both CH 4 and CO 2 emissions taking into account the instantaneous radiative forcing due to a unit increase in the concentration of gases, the decay times of gases in the atmosphere and the emissions patterns of emissions vary depending on biomass density and type of the forest area flooded, as well as on depth of flooding. As the Fearnside paper is more concerned with CO 2 emissions from the above water biomass, the authors' focus will be restricted to the formulae for calculating the cumulative effect of CO 2

  4. Hidrelétricas no Rio Madeira-RO: tensões sobre o uso do território e dos recursos naturais na Amazônia Hydroélectriques dans la rivière Madeira-RO: les tensions sur l´usage du territoire et des les ressources naturelles d’Amazonie Hydroelectric at the Madeira River: tensions about the territory using and the natural resources in the Amazon

    Directory of Open Access Journals (Sweden)

    Leonardo José Cordeiro Santos

    2012-06-01

    Full Text Available A construção das usinas hidrelétricas (Jirau e Santo Antônio, iniciadas em 2008, no Rio Madeira, município de Porto Velho-RO, confere à parte da Amazônia Sul Ocidental Rondoniense, uma (revalorização diante do contexto nacional e internacional devido ao potencial energético e ainda por compor parte de complexos para circulação e energia Sul-Americana. A materialização da obra incide sobre a intensificação dos conflitos sobre o uso do território e de seus recursos, fato comprovado a partir das análises feitas sobre as escalas de atuação dos atores e as estratégias na utilização dos recursos naturais na área de estudo. Os resultados ratificam que na Amazônia Rondoniense as políticas de infraestrutura estabelecidas são resultantes de interesses externos a região e, quando implantadas, desestruturam a lógica de organização local, elevando as tensões ambientais e sociais.La construction des usines hydroélectriques (Jirau et Santo Antônio, commencée en 2008, sur le Rio Madeira, dans le município Porto Velho-RO, (revalorise la partie d’ Amazonie Sud Occidentale dú Rondônia en raison du potentiel énérfetique qu’elle gènére et son inscription dans le réseau d’alimentation électrique de l’Amérique du Sud. Mais l´rélisation des ouvrages intensifie les conflits d’utilisation du territoire et de ses ressources, comme le conferment les analyses produites par cette recherché sur les échelles d’intervention des acteurs et les estratégies d’utilisation des ressources naturelles dans la zone d’éstude. Les résultats montrent que dans l’Amazonie du Rondônia, les politiques d’infrastructure telles qu’elles sont conçues resultant d’intérêts externes à la région et, lorsqu’wlles sont implantées, déstructurent les logiques d’organisation locale et provoquent des tensions environnementales et sociales.The building of the hydroelectric plants (Jirau and Santo Antônio, which started

  5. Atmospheric emissions : hydro-electricity versus other options

    International Nuclear Information System (INIS)

    Chamberland, A.; Belanger, C.; Gagnon, L.

    1996-01-01

    One of the great environmental advantage offered by hydro-electricity in northern or temperate climates includes reduced atmospheric emissions. While natural gas plants, from an environmental viewpoint, are thought to be the best fossil fuel option, they emit 18 times more greenhouse gases, at least 60 times more sulfur dioxide and hundreds of times more nitrogen oxides than do hydro-electric systems. The relative SO 2 and greenhouse gas emissions from energy systems in Canada were outlined, and their environmental impacts were described. At the same time, mention was made of other environmental pollutants, such as acid rain, photochemical smog, and particulates that continue to have major impacts on the environment, but were displaced as the focus of attention by greenhouse gases. A study was conducted to determine the effects of extreme biomass decomposition and greenhouse gas emissions from reservoirs. The study showed that at depths of more than 10 centimeters below water surface, organic matter does not contribute to greenhouse gas production, even at 20 degrees C. It was demonstrated that even when maximum biomass decomposition is assumed, a modern natural gas plant would emit 14 times more green house gases than a hydroelectric plant of comparable capacity. 13 refs., 4 tabs., 3 figs

  6. Interlinking of Rivers in India: Issues & Challenges

    OpenAIRE

    MEHTA, Dharmendra; MEHTA, Naveen K.

    2013-01-01

    Abstract. The rivers in India are truly speaking not only life-line of masses but also for wild-life. The rivers play a vital role in the lives of the Indian people. The river systems help us in irrigation, potable water, cheap transportation, electricity as well as a source of livelihood for our ever increasing population. Some of the major cities of India are situated at the banks of holy rivers. Proper management of river water is the need of the hour. Indian agriculture largely d...

  7. Stable isotope characteristics of precipitation of Pamba River basin ...

    Indian Academy of Sciences (India)

    highly essential input function for isotope hydro- ... Wind speed in the Pamba River basin varies from 8.5 to. 13.6 km/hr (NWDA 2008). ... ets of low values in the hill stations of the Ghats ... reservoir for the hydroelectric power production in.

  8. Will initiatives to promote hydroelectricity consumption be effective? Evidence from univariate and panel LM unit root tests with structural breaks

    International Nuclear Information System (INIS)

    Lean, Hooi Hooi; Smyth, Russell

    2014-01-01

    This paper examines whether initiatives to promote hydroelectricity consumption are likely to be effective by applying univariate and panel Lagrange Multiplier (LM) unit root tests to hydroelectricity consumption in 55 countries over the period 1965–2011. We find that for the panel, as well as about four-fifths of individual countries, that hydroelectricity consumption is stationary. This result implies that shocks to hydroelectricity consumption in most countries will only result in temporary deviations from the long-run growth path. An important consequence of this finding is that initiatives designed to have permanent positive effects on hydroelectricity consumption, such as large-scale dam construction, are unlikely to be effective in increasing the share of hydroelectricity, relative to consumption of fossil fuels. - Highlights: • Applies unit root tests to hydroelectricity consumption. • Hydroelectricity consumption is stationary. • Shocks to hydroelectricity consumption result in temporary deviations from the long-run growth path

  9. An estimation of the capacity to produce hydrogen by wasted hydroelectric energy for the three largest Brazilian hydroelectric

    Energy Technology Data Exchange (ETDEWEB)

    Padilha, Janine C.; Trindade, Leticia G. da; Souza, Roberto F. de [Universidade Federal do Rio Grande do Sul (UFRGS), Porto Alegre, RS (Brazil). Inst. of Chemistry], Email: janine@iq.ufrgs.br; Miguel, Marcelo [Itaipu Binacional, Foz do Iguacu, PR (Brazil)

    2010-07-01

    The use of water wasted in hydroelectric plants as normalization dam excess, which constitute a hydrodynamic potential useful to generate electric energy which can be subsequently used to produce hydrogen and its subsequent consumption in fuel cells has been considered as an alternative for hydraulic energy-rich countries like Brazil. The case is examined in which all the water wasted in the hydroelectric plants, spilled by dam gates to maintain acceptable water levels, from the 3 largest Brazilian hydroelectric plants was used to produce hydrogen. During the year of 2008, the electric energy produced from this utilization would have been equivalent to 52.8 TWh, an amount that corresponds to an increase of ca. 15% of the total electric energy produced in the country. Furthermore, if this amount of hydrogen was used in the replacement of internal combustion vehicles by fuel cells, this would have prevented the production of 2.26 x 10{sup 7} ton of Co{sub 2} per year. This plan would also significantly decrease production and release of greenhouse gases. (author)

  10. Bathymetric surveys of the Neosho River, Spring River, and Elk River, northeastern Oklahoma and southwestern Missouri, 2016–17

    Science.gov (United States)

    Hunter, Shelby L.; Ashworth, Chad E.; Smith, S. Jerrod

    2017-09-26

    In February 2017, the Grand River Dam Authority filed to relicense the Pensacola Hydroelectric Project with the Federal Energy Regulatory Commission. The predominant feature of the Pensacola Hydroelectric Project is Pensacola Dam, which impounds Grand Lake O’ the Cherokees (locally called Grand Lake) in northeastern Oklahoma. Identification of information gaps and assessment of project effects on stakeholders are central aspects of the Federal Energy Regulatory Commission relicensing process. Some upstream stakeholders have expressed concerns about the dynamics of sedimentation and flood flows in the transition zone between major rivers and Grand Lake O’ the Cherokees. To relicense the Pensacola Hydroelectric Project with the Federal Energy Regulatory Commission, the hydraulic models for these rivers require high-resolution bathymetric data along the river channels. In support of the Federal Energy Regulatory Commission relicensing process, the U.S. Geological Survey, in cooperation with the Grand River Dam Authority, performed bathymetric surveys of (1) the Neosho River from the Oklahoma border to the U.S. Highway 60 bridge at Twin Bridges State Park, (2) the Spring River from the Oklahoma border to the U.S. Highway 60 bridge at Twin Bridges State Park, and (3) the Elk River from Noel, Missouri, to the Oklahoma State Highway 10 bridge near Grove, Oklahoma. The Neosho River and Spring River bathymetric surveys were performed from October 26 to December 14, 2016; the Elk River bathymetric survey was performed from February 27 to March 21, 2017. Only areas inundated during those periods were surveyed.The bathymetric surveys covered a total distance of about 76 river miles and a total area of about 5 square miles. Greater than 1.4 million bathymetric-survey data points were used in the computation and interpolation of bathymetric-survey digital elevation models and derived contours at 1-foot (ft) intervals. The minimum bathymetric-survey elevation of the Neosho

  11. Access to realization of small hydroelectric power station in Republic of Macedonia

    International Nuclear Information System (INIS)

    Jakimova Filipovska, Nevenka

    2001-01-01

    In the paper an overview of the small-scale hydroelectric power plants is presented. The categorization groups of small to micro hydroelectric power plants by different countries are given. Also, the evaluation models of the projects for realization the small hydroelectric power plants are analysed. The aim of the paper is to stress the advantages of the small hydro projects and their implementation in Macedonia

  12. Environment and hydroelectricity colloquium - Synthesis; Colloque Environnement et Hydro-electricite - Synthese

    Energy Technology Data Exchange (ETDEWEB)

    Aelbrecht, Denis; Abadie, Marc; Baril, Dominique; Delacoux, Jean-Yves; Delaunay, Alexis; Loudiere, Daniel; Penalba, Anne; Pont, Didier; Rocq, Sylvie; Roult, Didier; Sheibani, Neda; Thevenet, Regis; Weisrock, Ghislain

    2010-10-15

    This document proposes a synthesis of a colloquium dedicated to the interactions between hydroelectric installations and the environment. The four sessions respectively addressed the impacts of hydroelectric installations on ecosystems and more particularly on pisciculture populations (strategies for migration restoration, development of fish-friendly turbines), the sedimentary management of hydroelectric installations, the implementation of the Water Framework European Directive (Austrian experience, biological assessment criteria), and examples of environmental integration of existing or projected installations

  13. Canadian Environmental Assessment Act : A comprehensive study report on the Peribonka hydroelectric power project

    International Nuclear Information System (INIS)

    2004-01-01

    This report presents the results of an environmental assessment of Hydro-Quebec's proposed project to build a new facility on the Peribonka River. The facility includes a run-of-river generating station with an installed capacity of 385 MW. The Quebec Region of the Department of Fisheries and Oceans Canada has conducted an environmental assessment of the project's effects. A summary of the project and the environment in which it will be carried out was presented along with the results of public consultations conducted by Hydro-Quebec. A summary of the main environmental effects was included along with cumulative effects and the effects caused by accidents or malfunctions that may occur. In addition, the terms and conditions of mitigation measures and follow-up programs were described and the significance of any environmental impacts were assessed. The project includes the construction of a 80 metre high dam, two dikes and one spillway upstream of the mouth of the Manouane River. The level of the reservoir would remain at close to its maximum level of 244.2 metres to optimize hydroelectric production. The power house would be integrated into the Hydro-Quebec transmission network. The main impacts of the project would result from the construction of the reservoir, the encroachment caused by associated facilities and the changes in hydrological conditions. This report outlined the current use of lands and resources for traditional purposes by Aboriginals. It also discussed the effects of natural events such as flooding, waves and climate that may cause damage to the facilities. It was determined that the project is not likely to cause significant effects on the renewable resources of the forest and the fisheries. The Department of Fisheries and Oceans, after having taking into account proposed mitigation measures, has rendered a preliminary conclusion which states that the project is not likely to have significant negative environmental effects. 29 refs., 7 tabs., 2

  14. Holocene versus modern catchment erosion rates at 300 MW Baspa II hydroelectric power plant (India, NW Himalaya)

    Science.gov (United States)

    Draganits, Erich; Gier, Susanne; Hofmann, Christa-Ch.; Janda, Christoph; Bookhagen, Bodo; Grasemann, Bernhard

    2014-08-01

    300 MW Baspa II is India's largest private hydroelectric facility, located at the Baspa River which is an important left-hand tributary to the Sutlej River in the NW Himalaya (India). In this valley the Sangla palaeo-lake has been dammed around 8200 yr BP behind a rock-avalanche dam and Baspa II is located exactly on top of this palaeo-lake. This special location represents a very rare possibility to evaluate the short-term, river load and hydrological parameters measured during the planning and operational stages of Baspa II with the long-term parameters gained from the palaeo-lake sediments from the catchment. Sedimentological and geomorphological investigations of the lacustrine sediments have been used to reconstruct environmental changes during >2500 years of its existence. The Mid-Holocene erosion rates of the Baspa catchment estimated from the volume and duration of deposition of the exposed lake sediments are at 0.7-1.0 mm yr-1, almost identical with the modern erosion rates calculated from river gauge data from Baspa II. Several charcoal layers and charcoal pieces from the uppermost palaeo-lake levels around 5000 cal yr BP might be related to woodland clearance and they possibly represent one of the oldest evidences for human presence in the Baspa Valley during Neolithic time.

  15. Water quality in Italy: Po River and its tributaries

    International Nuclear Information System (INIS)

    Crosa, G.; Marchetti, R.

    1993-01-01

    For Italy's Po River hydrological basin, artificial reservoirs have a great importance; water reserve is about 1600 million cubic meters for the hydroelectric reservoirs and about 76 million cubic meters for irrigation. The principal factors determining the water quality of the Po River and its tributaries are examined. Organic micropollutants, metals and the microbial load are the principal parameters altering the quality of the waters; dilution is the prevailing factor reducing this contamination

  16. Recovery Act: Hydroelectric Facility Improvement Project - Replacement of Current Mechanical Seal System with Rope Packing System

    Energy Technology Data Exchange (ETDEWEB)

    Stephens, Jessica D.

    2013-05-29

    On January 27, 2010 the City of North Little Rock, Arkansas received notification of the awarding of a Department of Energy (DOE) grant totaling $450,000 in funding from the American Recovery and Reinvestment Act (ARRA) under the Project Title: Recovery Act: Hydroelectric Facility Improvement Project – Automated Intake Clearing Equipment and Materials Management. The purpose of the grant was for improvements to be made at the City’s hydroelectric generating facility located on the Arkansas River. Improvements were to be made through the installation of an intake maintenance device (IMD) and the purchase of a large capacity wood grinder. The wood grinder was purchased in order to receive the tree limbs, tree trunks, and other organic debris that collects at the intake of the plant during high flow. The wood grinder eliminates the periodic burning of the waste material that is cleared from the intake and reduces any additional air pollution to the area. The resulting organic mulch has been made available to the public at no charge. Design discussion and planning began immediately and the wood grinder was purchased in July of 2010 and immediately put to work mulching debris that was gathered regularly from the intake of the facility. The mulch is currently available to the public for free. A large majority of the design process was spent in discussion with the Corps of Engineers to obtain approval for drawings, documents, and permits that were required in order to make changes to the structure of the powerhouse. In April of 2011, the City’s Project Engineer, who had overseen the application, resigned and left the City’s employ. A new Systems Mechanical Engineer was hired and tasked with overseeing the project. The transfer of responsibility led to a re-examination of the original assumptions and research upon which the grant proposal was based. At that point, the project went under review and a trip was booked for July 2011 to visit facilities that currently

  17. Measurents of natural radioactivity in an underground hydroelectric power plant

    International Nuclear Information System (INIS)

    Malvicini, Andrea; Esposito, PierLuigi; Depiesse, Danielle

    2008-01-01

    In underground working places, especially when ventilation is not properly regulated, large amounts of natural radioactivity can be found. This can give rise to potential exposures of non-negligible magnitude. Direct measurements of gamma radiation and radon were carried out during excavation works for the construction of an hydroelectric plant in the north of Italy. After the construction of the plant, in order to reduce radon concentrations and to improve ventilation effectiveness, the main entry gate was motorized and automated. Then, in order to find the optimal speed for the fans located in the galleries and in the power plant, radon and airflow velocity were measured. Correlation data between airflow and radon concentrations were found. An automatic regulation system has been set up using air velocity detectors and slightly modifying the software for the control and regulation of the power plant. Measurements must be made in order to identify radon sources and evaluate quantitative contributions as a function of ventilation. Underground hydroelectric plants are provided with entry galleries as well as secondary galleries from which radon coming out from the soil and the walls can exhale in quantities that depend on the contents of 226 Ra in the rocks and in the building materials. Other radon sources are the water coming out from the walls of the galleries and the water in the deep well located at the bottom of the power plant. Geological studies and mathematical models are useful means for the analysis of the relative contributions of the main sources as well as for the prediction of the effects deriving from modifications of the hydroelectric plant ventilation system or resulting from other important structural changes. (author)

  18. Robust Optimisation for Hydroelectric System Operation under Uncertainty

    OpenAIRE

    Apostolopoulou, D.; De Greve, Z.; McCulloch, M.

    2018-01-01

    In this paper, we propose an optimal dispatch scheme for a cascade hydroelectric power system that maximises the head levels of each dam, and minimises the spillage effects taking into account uncertainty in the net load variations, i.e., the difference between the load and the renewable resources, and inflows to the cascade. By maximising the head levels of each dam the volume of water stored, which is a metric of system resiliency, is maximised. In this regard, the operation of the cascade ...

  19. Understanding the costs and schedule of hydroelectric projects

    International Nuclear Information System (INIS)

    Merrow, E.W.; Schroeder, B.R.

    1991-01-01

    This paper is based on a study conducted for the World Bank which evaluated the feasibility of developing an empirically based ex ante project analysis system for hydroelectric projects. The system would be used to assess: the reasonableness of engineering-based cost and schedule estimates used for project appraisal and preliminary estimates used to select projects for appraisal; and the potential for cost growth and schedule slip. The system would help identify projects early in the project appraisal process that harbor significantly higher than normal risks of overrunning cost and schedule estimates

  20. Hydroelectric rent and precipitation variability: the case of Norway

    International Nuclear Information System (INIS)

    Amundsen, E.S.; Tjoetta, Sigve

    1993-01-01

    Norway is about to reorganize its electricity production sector from a predominantly administered one to one which is based on market prices and principles of efficiency. The objective of this paper is to model the energy sector and to measure the size of hydro rent before and after the reorganization. We construct a regionally diversified and integrated equilibrium model of production, transmission and distribution of hydroelectricity. Particular attention is paid to the role of precipitation variability for the size and regional variation of hydro rent. We consider alternative routes for assessing the size of hydro rent in a long-run perspective. (author)

  1. Inventory studies of hydroelectric power plants: the methodological differences for small and large power plants; Estudos de inventario de usinas hidreletricas: as diferencas metodologicas para pequenas e grandes centrais

    Energy Technology Data Exchange (ETDEWEB)

    Bajay, Sergio Valdir [Universidade Estadual de Campinas, SP (Brazil). Faculdade de Engenharia Mecanica. Dept. de Energia; Martinez, Carlos Barreira [Faculdade de Engenharia Civil de Itajuba, MG (Brazil)

    1992-12-31

    The hydroelectric potential handbook produced by ELETROBRAS provides procedures to guides the hydro power studies of river sites. In this paper, a critical analysis of these procedures is carried out, for both large and small hydro power plants, pin pointing the plant`s planning/design interface there, several proposals are put forward in the order to adapt these procedures to small hydro plants, optimizing their planning and design for the several situation, found in Brazilian reality. (author) 5 refs.

  2. Natural infection by Paramphistomoidea Stiles and Goldberger, 1910 trematodes in wild Marsh Deer (Blastocerus dichotomus Illiger, 1815) from Sérgio Mottas's hydroelectric power station flooding area.

    Science.gov (United States)

    do Nascimento, Cristiano G; do Nascimento, Adjair A; Mapeli, Elaine B; Tebaldi, José H; Duarte, José M B; Hoppe, Estevam G Lux

    2006-01-01

    Studies on helminthfauna of marsh deer Blastocerus dichotomus Illiger, 1815 are rare, although helminthic diseases are an important cause of mortality in these animals. Fifteen male and female adult marsh deer from Sergio Motta's hydroelectric power station flooding area at Paraná River which died during the capture and quarantine procedures, between 1998 and 1999, were necropsied. Three trematodes species, Paramphistomum cervi, Balanorchis anastrofus and Zygocotyle lunatum, all belonging to superfamily Paramphistomoidea, were identified. The obtained trematodes were identified, counted and their respectives descriptors of infection were determined. All necropsied animals were infected by helminths. Paramphistomum cervi was the most prevalent species, while Zygocotyle lunatum was found in only one animal.

  3. Hydroelectric power in Switzerland: large growth potential by increasing the installed power

    International Nuclear Information System (INIS)

    Schleiss, A.

    2007-01-01

    Due to its important hydroelectric power generation facilities (about 525 plants with a total power of 13,314 MW producing about 35.3 TWh annually) Switzerland plays an important role in the interconnected European power system. Large artificial storage lakes in the Swiss Alps can generate peak power during hours of highest demand: 9700 MW are available from accumulated energy and the total power of pumped-storage facilities amounts to 1700 MW. The latter allow refilling the reservoirs at periods of low power demand and generating power at periods of peak demand. In the case of favorable conditions, the yearly average power production could be increased by 6% and the production during the winter period (October to March) by 20% by the year 2020. However, looking forward to the year 2050, the annual production is expected to decrease by 3% despite a possible extension of hydropower. This decrease is due to the enforcement of the minimum residual water flow rates required by a new legislation to protect the rivers. The enforcement is due at latest when the present licenses for water utilization expire. On the other hand, the installed (peak) power might be further increased by 50% by retrofitting the existing installations and constructing the pumped-storage plants currently at the planning stage

  4. Pingston hydroelectric project - stage 2 project report : volume 1 of 2

    International Nuclear Information System (INIS)

    1999-01-01

    The British Columbia Environmental Assessment Office has reviewed an application by Canadian Hydro Developers (B.C.) Inc., to develop the Pingston Hydroelectric Project, a run-of-river facility, located 60 km south of Revelstoke, British Columbia. The review includes an evaluation of any social and environmental impacts, including the effects on migratory birds, small mammals, amphibians, fish, wildlife, water quality, noise and visual aspects, that would be associated with the project. One consideration in selecting the project site was its ease of access along existing roadways and close proximity to power lines, another, the absence of any potential effects on fish and fish habitat. The project is also expected to have a negligible effect on water quality- related matters such as sediment transport, nutrient trapping in the headpond, and movement of large organic debris through the system. The project will not impact on archaeological resources, offers a renewable supply of energy and represents an overall positive effect on air quality for British Columbia. BC Hydro has committed to providing electrical interconnection to the main grid. 9 refs., 5 tabs., 14 figs., 9 appendices

  5. Effectiveness of water release as mitigation for hydroelectric impacts to fish

    International Nuclear Information System (INIS)

    Lewis, A.F.; Mitchell, A.C.

    1995-01-01

    Utility companies release water to mitigate the effects of hydroelectric projects on fish habitats. Utility companies, government agencies, and research communities in Canada, the US, Europe, New Zealand, and Australia were surveyed as part of a Canadian Electrical Association study to evaluate the effectiveness of water release as a mitigation. Respondents identified only 28 projects in which water was released specifically to protect fish habitats. Fewer than half of these projects (12) were judged as being effective. Six case histories with preimpact assessment and postimpact monitoring were reviewed. In four cases fish habitat or fish populations or both were maintained; in two cases they were not. The effectiveness of water release differed among rivers and fish species, and was greatest when designed to meet the habitat requirements of each life-history stage. A review of the literature did not support the theory that a particular fraction of the mean annual flow provides the bet fish habitat. Although smaller changes in the flow regime had smaller effects, increasing minimum flows above those historically observed did not necessarily increase fish production

  6. Dynamics of Total Microcystin LR Concentration in Three Subtropical Hydroelectric Generation Reservoirs in Uruguay, South America.

    Science.gov (United States)

    González-Piana, Mauricio; Fabián, Daniel; Piccardo, Andrea; Chalar, Guillermo

    2017-10-01

    This study analyzed the temporal dynamics of total microcystin LR concentrations between the years of 2012 and 2015 in the Bonete, Baygorria and Palmar hydroelectric generation reservoirs in the central region of the Negro River, Uruguay. The three reservoirs showed differents total microcystin LR concentration, with no significant differences among them. Over 20 sampling dates, the three reservoirs exhibited total microcystin LR concentrations on eight occasions that corresponded to a slight to moderate human health risk according to WHO guideline values for recreational waters. By determining the concentration of microcystin LR in cyanobacterial biomass, we identified cyanobacterial populations that occurred over time with varying degrees of toxin production (maximal 85.4 µg/mm 3 ). The microcystin LR concentration in Bonete was positively correlated with temperature (r = 0.587) and cyanobacterial biomass (r = 0.736), in Baygorria with cyanobacterial biomass (r = 0.521), and in Palmar with temperature (r = 0.500) and negatively correlated with ammonia (r = -0.492). Action is needed to reduce the presence of toxic cyanobacteria in these systems. A decrease in the use of agrochemicals and management changes in the reservoir basins could be successful long-term measures.

  7. Distribution of Major and Trace Elements in a Tropical Hydroelectric Reservoir in Sarawak, Malaysia.

    Science.gov (United States)

    Sim, Siong Fong; Ling, Teck Yee; Nyanti, Lee; Ean Lee, Terri Zhuan; Mohd Irwan Lu, Nurul Aida Lu; Bakeh, Tomy

    2014-01-01

    This paper reports the metals content in water, sediment, macroalgae, aquatic plant, and fish of Batang Ai Hydroelectric Reservoir in Sarawak, Malaysia. The samples were acid digested and subjected to atomic absorption spectrometry analysis for Na, K, Mn, Cr, Ni, Zn, Mg, Fe, Sn, Al, Ca, As, Se, and Hg. The total Hg content was analysed on the mercury analyser. Results showed that metals in water, sediment, macroalgae, aquatic plant, and fish are distinguishable, with sediment and biota samples more susceptible to metal accumulation. The distributions of heavy metals in water specifically Se, Sn, and As could have associated with the input of fish feed, boating, and construction activities. The accumulation of heavy metals in sediment, macroalgae, and aquatic plant on the other hand might be largely influenced by the redox conditions in the aquatic environment. According to the contamination factor and the geoaccumulation index, sediment in Batang Ai Reservoir possesses low risk of contamination. The average metal contents in sediment and river water are consistently lower than the literature values reported and well below the limit of various guidelines. For fishes, trace element Hg was detected; however, the concentration was below the permissible level suggested by the Food and Agriculture Organization.

  8. Hydroelectric project EA's [environmental assessments]: The Magpie development in northern Ontario

    International Nuclear Information System (INIS)

    Ashwood, K.

    1992-01-01

    Great Lakes Power recently constructed a hydroelectric plant on the Magpie River near Wawa, Ontario. The project involved three main elements: construction of a 33 m high dam, a 15.5 MW power station, and a spillway at Steephill Falls; construction of a 3.5 m high overflow weir just above the crest of scenic Magpie Falls, creating a head pond to supply a 15 MW power plant; and construction of a weir and 15 MW power plant at Mission Falls. Although this was a private development and therefore not automatically subject to Ontario's Environmental Assessment Act, Great Lakes Power decided to conform with the act's requirements and undertook a comprehensive environmental assessment (EA). Environmental issues were focused on changes in hydrology and water quality, impacts on fisheries and natural resources, slope stability and erosion, socioeconomic impacts, impacts on heritage resources, and impacts on tourism and recreation. The project was approved subject to conditions which included implementation of mitigation and monitoring requirements outlined in the EA document. Environmental specialists worked closely with the engineers at the detailed design stage of the project, resulting in modifications to the preliminary design to minimize environmental impacts

  9. Lake Robertson hydroelectric project. Construction of a roller compacted concrete dam

    Energy Technology Data Exchange (ETDEWEB)

    Labelle, M.; Robitaille, F. [Hydro-Quebec, Montreal, PQ (Canada)

    1995-12-31

    Construction of the Lake Robertson hydroelectric project on Quebec`s Lower North Shore was discussed in detail. The dam and powerhouse, located on the HaHa River, consists of a 134 m long concrete gravity dam, and a 21 MW powerhouse with two 69 kV transmission lines and four substations. The climate, terrain, and geography of the region, all of them characterized as severe, and the logistics of construction of the dam and power lines, aggravated by the isolation and severe conditions at the site, were described. The roller compacted concrete design and construction were noted, and justification for a concrete dam over an earth-fill dam was provided. Economics, properties, and composition of the roller compacted concrete (RCC) were examined, and control test results for the RCC concrete were provided. The use of RCC for the Lake Robertson development was described as successful in terms of the quality, watertightness, and completion time. The experience gained by the participants will make it possible to offer RCC as an alternative on various other projects. 2 figs.

  10. 76 FR 25330 - Georgia Power Company; Project No. 485-063-Georgia and Alabama, Bartletts Ferry Hydroelectric...

    Science.gov (United States)

    2011-05-04

    ... DEPARTMENT OF ENERGY Federal Energy Regulatory Commission Georgia Power Company; Project No. 485-063--Georgia and Alabama, Bartletts Ferry Hydroelectric Project; Notice of Proposed Restricted Service... Ferry Hydroelectric Project. The Programmatic Agreement, when executed by the Commission, the Georgia...

  11. 76 FR 51961 - Brown Bear Power, LLC, Topsham Hydroelectric Generating Facility Trust No. 1, Topsham Hydro...

    Science.gov (United States)

    2011-08-19

    ... On August 3, 2011, Brown Bear Power, LLC, Topsham Hydroelectric Generating Facility (Trust No. 1... DEPARTMENT OF ENERGY Federal Energy Regulatory Commission [Project No. 4784-082] Brown Bear Power, LLC, Topsham Hydroelectric Generating Facility Trust No. 1, Topsham Hydro Partners Limited Partnership...

  12. Feasibility, Design and Construction of a Small Hydroelectric Power Generation Station as a Student Design Project.

    Science.gov (United States)

    Peterson, James N.; Hess, Herbert L.

    An undergraduate capstone engineering design project now provides hydroelectric power to a remote wilderness location. Students investigated the feasibility of designing, building, and installing a 4kW hydroelectric system to satisfy the need for electric power to support the research and teaching functions of Taylor Ranch, a university facility…

  13. What are the stakes of the hydroelectric power? Supplement: report on the renewable energies

    International Nuclear Information System (INIS)

    2003-01-01

    The document presents the regulation and the stakes concerning the hydroelectricity development in France: contribution to the greenhouse effect fight, the environment preservation, possible uses. It proposes then, a grid of a socio-economical evaluation of the projects. In this framework, the impacts of the little hydroelectric power and the possible corrective measures are described. (A.L.B.)

  14. 78 FR 62361 - Green Mountain Power Corporation; Vermont; Otter Creek Hydroelectric Project; Notice of Proposed...

    Science.gov (United States)

    2013-10-21

    ... Power Corporation; Vermont; Otter Creek Hydroelectric Project; Notice of Proposed Restricted Service... issuance of a new license for the Otter Creek Hydroelectric Project No. 2558. The programmatic agreement... Agreement would be incorporated into any Order issuing a license. Green Mountain Power Corporation, as...

  15. 76 FR 26718 - Gibson Dam Hydroelectric Company, LLC; Notice of Availability of Draft Environmental Assessment

    Science.gov (United States)

    2011-05-09

    ... DEPARTMENT OF ENERGY Federal Energy Regulatory Commission [Project No. 12478-003 Montana] Gibson Dam Hydroelectric Company, LLC; Notice of Availability of Draft Environmental Assessment In accordance... reviewed the application for license for the Gibson Dam Hydroelectric Project, located at the U.S...

  16. 77 FR 47628 - Eagle Mountain Pumped Storage Hydroelectric Project; Eagle Crest Energy; Notice of Meeting...

    Science.gov (United States)

    2012-08-09

    ... DEPARTMENT OF ENERGY Federal Energy Regulatory Commission [P-13123-002-CA] Eagle Mountain Pumped Storage Hydroelectric Project; Eagle Crest Energy; Notice of Meeting Postponement On July 17, 2012, the...), on the Eagle Mountain Pumped Storage Hydroelectric Project. However, the meeting has been postponed...

  17. 77 FR 2970 - Gibson Dam Hydroelectric Company, LLC, Montana; Notice of Availability of Final Environmental...

    Science.gov (United States)

    2012-01-20

    ... DEPARTMENT OF ENERGY Federal Energy Regulatory Commission [Project No. 12478-003] Gibson Dam Hydroelectric Company, LLC, Montana; Notice of Availability of Final Environmental Assessment In accordance with... reviewed the application for license for the Gibson Dam Hydroelectric Project, located at the U.S...

  18. 76 FR 22393 - Eagle Mountain Pumped Storage Hydroelectric Project, Eagle Crest Energy; Notice of Cancellation...

    Science.gov (United States)

    2011-04-21

    ... DEPARTMENT OF ENERGY Federal Energy Regulatory Commission [P-13123-002-CA] Eagle Mountain Pumped Storage Hydroelectric Project, Eagle Crest Energy; Notice of Cancellation of Teleconference On March 15... Mountain Pumped Storage Hydroelectric Project. This meeting has been cancelled. We will reschedule this...

  19. 78 FR 25263 - Eagle Mountain Pumped Storage Hydroelectric Project; Eagle Crest Energy; Notice of Meeting With...

    Science.gov (United States)

    2013-04-30

    ... DEPARTMENT OF ENERGY Federal Energy Regulatory Commission [P-13123-002--CA] Eagle Mountain Pumped Storage Hydroelectric Project; Eagle Crest Energy; Notice of Meeting With the Bureau of Land Management a... Hydroelectric Project. e. All local, state, and federal agencies, tribes, and interested parties, are hereby...

  20. 76 FR 71967 - Jordan Hydroelectric Limited Partnership; Notice of Availability of Final Environmental Assessment

    Science.gov (United States)

    2011-11-21

    ... DEPARTMENT OF ENERGY Federal Energy Regulatory Commission [Project No. 12740-003-VA] Jordan Hydroelectric Limited Partnership; Notice of Availability of Final Environmental Assessment In accordance with... application for an original license for the 3.0-megawatt (MW) Flannagan Hydroelectric Project located on the...

  1. 75 FR 15705 - Mahoning Creek Hydroelectric Company, LLC; Notice of Availability of Environmental Assessment

    Science.gov (United States)

    2010-03-30

    ... DEPARTMENT OF ENERGY Federal Energy Regulatory Commission [Project No. 12555-004-PA] Mahoning Creek Hydroelectric Company, LLC; Notice of Availability of Environmental Assessment March 23, 2010. In... reviewed the application for an original license for the Mahoning Creek Hydroelectric Project, to be...

  2. 77 FR 26537 - Fairlawn Hydroelectric Company, LLC; Notice of Availability of Final Environmental Assessment

    Science.gov (United States)

    2012-05-04

    ... DEPARTMENT OF ENERGY Federal Energy Regulatory Commission [Project No. 12715-003] Fairlawn Hydroelectric Company, LLC; Notice of Availability of Final Environmental Assessment In accordance with the... the proposed 14,000-kilowatt (kW) Jennings Randolph Hydroelectric Project located on the North Branch...

  3. 76 FR 1148 - CRD Hydroelectric LLC, Iowa; Notice of Availability of Environmental Assessment

    Science.gov (United States)

    2011-01-07

    ... DEPARTMENT OF ENERGY Federal Energy Regulatory Commission [Project No. 12576-004] CRD Hydroelectric LLC, Iowa; Notice of Availability of Environmental Assessment December 23, 2010. In accordance... reviewed the application for an original license for the Red Rock Hydroelectric Project (FERC Project No...

  4. 77 FR 43280 - Eagle Mountain Pumped Storage Hydroelectric Project, Eagle Crest Energy; Notice of Meeting With...

    Science.gov (United States)

    2012-07-24

    ... DEPARTMENT OF ENERGY Federal Energy Regulatory Commission [P-13123-002-CA] Eagle Mountain Pumped Storage Hydroelectric Project, Eagle Crest Energy; Notice of Meeting With the Bureau of Land Management a... Mountain Pumped Storage Hydroelectric Project. e. All local, state, and federal agencies, tribes, and...

  5. 78 FR 26358 - Eagle Mountain Pumped Storage Hydroelectric Project, Eagle Crest Energy; Notice of Meeting With...

    Science.gov (United States)

    2013-05-06

    ... DEPARTMENT OF ENERGY Federal Energy Regulatory Commission [P-13123-002-CA] Eagle Mountain Pumped Storage Hydroelectric Project, Eagle Crest Energy; Notice of Meeting With the Bureau of Land Management a... Policy and Management Act and the Federal Power Act), on the Eagle Mountain Pumped Storage Hydroelectric...

  6. 75 FR 73059 - Record of Decision and Floodplain Statement of Findings for the Cushman Hydroelectric Project...

    Science.gov (United States)

    2010-11-29

    ... Floodplain Statement of Findings for the Cushman Hydroelectric Project, Mason County, Washington... Project in Mason County, Washington. These components include a new 3.6 megawatt (MW) powerhouse on the... components of the Cushman Hydroelectric Project in Mason County, Washington. These components include a new 3...

  7. Risks in the operation of hydroelectric power plants and nuclear power in Brazil

    International Nuclear Information System (INIS)

    Goldemberg, J.

    1986-01-01

    A comparison between the utilization of electrical energy generated by hydroelectric power plant and nuclear power plant is made. The risks from nuclear installations and the environmental effects of hydroelectric power plants and nuclear power plants are presented. (E.G.) [pt

  8. Production capacity of equipment for medium and large hydroelectric power plant in China

    Energy Technology Data Exchange (ETDEWEB)

    Huang Shenyang [Ministry of Electric Power, Beijing (China). Bureau of Electric Power Machinery

    1995-07-01

    This document presents an overview on the production capacity of equipment for medium and large hydroelectric power plant in China. The document approaches general aspects, production capability and testing facilities related to Francis, Kaplan, tubular and impulse hydroelectric generating sets, and the introduction of main manufacturers as well.

  9. Amplification of Marzagao small scale hydroelectric power plant; Ampliacao da PCH de Marzagao

    Energy Technology Data Exchange (ETDEWEB)

    Zeller, A.R.; Porto, D.S.; Pinto, F.S. [Leme Engenharia, MG (Brazil); Melo, A.U.; Almeida, A.M.; Pereira, D.R. [Fertiligas Industria e Comercio Ltda., MG (Brazil)

    1991-12-31

    This work presents the modernization and power augmentation of Marzagao small scale hydroelectric power plant. In order that the costs of the project be compatible to the total of investments in the project, it was necessary the adoption of methodologies and time scales different from those used for large and medium scale hydroelectric power plants 5 figs.

  10. 78 FR 69663 - Jonathan and Jayne Chase Troy Mills Hydroelectric Inc.; Notice of Transfer of Exemption

    Science.gov (United States)

    2013-11-20

    ... Jayne Chase Troy Mills Hydroelectric Inc.; Notice of Transfer of Exemption 1. By letter filed October 15, 2013, Jonathan Chase informed the Commission that the exemption from licensing for the Troy Hydroelectric Project, FERC No. 13381, originally issued December 2, 2011,\\1\\ has been transferred to Troy Mills...

  11. 76 FR 81929 - South Carolina Public Service Authority; Notice of Workshop for Santee Cooper Hydroelectric Project

    Science.gov (United States)

    2011-12-29

    ... DEPARTMENT OF ENERGY Federal Energy Regulatory Commission [Project No. 199-205] South Carolina Public Service Authority; Notice of Workshop for Santee Cooper Hydroelectric Project On May 26 and...) and the South Carolina Public Service Authority (SCPSA), licensee for the Santee-Cooper Hydroelectric...

  12. 75 FR 51258 - Boott Hydropower, Inc.; Eldred L Field Hydroelectric Facility Trust; Notice of Application for...

    Science.gov (United States)

    2010-08-19

    ... DEPARTMENT OF ENERGY Federal Energy Regulatory Commission [Project No. 2790-055] Boott Hydropower... Hydropower, Inc. and Eldred L Field Hydroelectric Facility Trust. e. Name of Project: Lowell Hydroelectric... Affairs Coordinator, Boott Hydropower, Inc., One Tech Drive, Suite 220, Andover, MA 01810. Tel: (978) 681...

  13. Canadian Environmental Assessment Act - comprehensive study report: new Grand-Mere hydroelectric facility proposed by Hydro-Quebec

    International Nuclear Information System (INIS)

    1999-06-01

    A description is given of the hydroelectric construction project as well as the environment surrounding it, the outcome of consultations with interest parties in the public, the overall environmental impacts and cumulative impacts with associated problems that may occur in carrying out the project, attempts at project and environmental mitigation, measuring the importance of the cumulative and environmental effects, conditions for project acceptance, and the overall acceptance of the project or its rejection. The older hydroelectric project was constructed in the post-1910 period and being out of date is experiencing operational problems. There are four problem areas that are important including a need for major repairs to the turbine-generators, lack of flexibility and low electrical capacity that affect the working of the sending-end substation, a state of deterioration affecting operation of the spillways concrete structure, and a bottleneck problem on the Saint-Maurice river caused by the low flow design of the Grand-Mere power station in comparison with that of the Saint-Maurice station. Considering economical, social and environmental factors, of the three options of abandoning the site, upgrading the existing site or constructing a new one, the third option is the preferred one, a conclusion based on considering the out of date state of Grand-Mere facilities and the bottleneck flow condition created on the Saint-Maurice river by the older station. Given the proposed efforts at mitigation, and the follow-up operations stated by the third option advocate, the Department of Fisheries and Oceans is of the opinion that the proposed plans will not affect the environment in an adverse manner. 7 refs

  14. Spatial-temporal dynamics and sources of total Hg in a hydroelectric reservoir in the Western Amazon, Brazil.

    Science.gov (United States)

    Pestana, I A; Bastos, W R; Almeida, M G; de Carvalho, D P; Rezende, C E; Souza, C M M

    2016-05-01

    Damming rivers to construct hydroelectric reservoirs results in a series of impacts on the biogeochemical Hg cycle. For example, modifying the hydrodynamics of a natural watercourse can result in the suspension and transport of Hg deposits in the water column, which represents an exposure risk for biota. The objective of this study was to evaluate the influences of seasonality on the dispersion of total Hg in the Hydroelectric Power Plant (HPP)-Samuel Reservoir (Porto Velho/Brazil). Sampling campaigns were performed during the three following hydrological periods characteristic of the region: low (Oct/2011), ebbing (May/2012), and high (Feb/2013) water. Sediment profiles, suspended particulate matter (SPM), and aquatic macrophytes (Eicchornia crassipes and Oryza spp.) were collected, and their Hg concentrations and isotopic and elemental C and N signatures were determined. The drainage basin significantly influenced the SPM compositions during all the periods, with a small autochthonous influence from the reservoir during the low water. The highest SPM Hg concentrations inside the reservoir were observed during the high water period, suggesting that the hydrodynamics of this environment favor the suspension of fine SPM, which has a higher Hg adsorption capacity. The Hg concentrations in the sediment profiles were ten times lower than those in the SPM, indicating that large particles with low Hg concentrations were deposited to form the bottom sediment. Hg concentrations were higher in aquatic macrophyte roots than in their leaves and appeared to contribute to the formation of SPM during the low water period. In this environment, Hg transport mainly occurs in SPM from the Jamari River drainage basin, which is the primary source of Hg in this environment.

  15. Mercury accumulation in bats near hydroelectric reservoirs in Peninsular Malaysia.

    Science.gov (United States)

    Syaripuddin, Khairunnisa; Kumar, Anjali; Sing, Kong-Wah; Halim, Muhammad-Rasul Abdullah; Nursyereen, Muhammad-Nasir; Wilson, John-James

    2014-09-01

    In large man-made reservoirs such as those resulting from hydroelectric dam construction, bacteria transform the relatively harmless inorganic mercury naturally present in soil and the submerged plant matter into toxic methylmercury. Methylmercury then enters food webs and can accumulate in organisms at higher trophic levels. Bats feeding on insects emerging from aquatic systems can show accumulation of mercury consumed through their insect prey. In this study, we investigated whether the concentration of mercury in the fur of insectivorous bat species was significantly higher than that in the fur of frugivorous bat species, sampled near hydroelectric reservoirs in Peninsular Malaysia. Bats were sampled at Temenggor Lake and Kenyir Lake and fur samples from the most abundant genera of the two feeding guilds-insectivorous (Hipposideros and Rhinolophus) and frugivorous (Cynopterus and Megaerops) were collected for mercury analysis. We found significantly higher concentrations of total mercury in the fur of insectivorous bats. Mercury concentrations also differed significantly between insectivorous bats sampled at the two sites, with bats from Kenyir Lake, the younger reservoir, showing higher mercury concentrations, and between the insectivorous genera, with Hipposideros bats showing higher mercury concentrations. Ten bats (H. cf. larvatus) sampled at Kenyir Lake had mercury concentrations approaching or exceeding 10 mg/kg, which is the threshold at which detrimental effects occur in humans, bats and mice.

  16. The hydrogen economy urgently needs environmentally sustainable hydroelectricity

    International Nuclear Information System (INIS)

    Goodland, R.

    1995-01-01

    Only two sources of energy were said to have the capacity to bridge the transition to fully sustainable and renewable energy, namely natural gas and hydro. The argument was made that because of this advantage, both forms will have to be promoted fast, since the transition to sustainable energy is urgent. In so far as natural gas supplies are concerned, it was estimated that they will last for perhaps the next 50 years, whereas hydroelectric potential is practically unlimited. Developing nations could vastly accelerate their development, reduce poverty and approach sustainability by exporting hydro to industrial countries. Similarly, industrial nations switching from fossil fuels to hydrogen could move up the environmental ranking, and significantly help alleviating global pollution and climate risks. Environmental ranking of new energy sources, world reservoirs of hydroelectric power, environmental and social ranking of hydro sites, the environmental impacts of hydro projects, and the concept of environmental sustainability in hydro reservoirs, were summarized. Greater acceptance of the need for sustainable development by the hydro industry was urged, along with more care in selecting hydro development sites with sustainability as a prime objective. 23 refs., 6 figs

  17. Benefits of fish passage and protection measures at hydroelectric projects

    International Nuclear Information System (INIS)

    Cada, G.F.; Jones, D.W.

    1993-01-01

    The US Department of Energy's Hydropower Program is engaged in a multi-year study of the costs and benefits of environmental mitigation measures at nonfederal hydroelectric power plants. An initial report (Volume 1) reviewed and surveyed the status of mitigation methods for fish passage, instream flows, and water quality; this paper focuses on the fish passage/protection aspects of the study. Fish ladders were found to be the most common means of passing fish upstream; elevators/lifts were less common, but their use appears to be increasing. A variety of mitigative measures is employed to prevent fish from being drawn into turbine intakes, including spill flows, narrow-mesh intake screens, angled bar racks, and lightor sound-based guidance measures. Performance monitoring and detailed, quantifiable performance criteria were frequently lacking at non-federal hydroelectric projects. Volume 2 considers the benefits and costs of fish passage and protection measures, as illustrated by case studies for which performance monitoring has been conducted. The report estimates the effectiveness of particular measures, the consequent impacts on the fish populations that are being maintained or restored, and the resulting use and non-use values of the maintained or restored fish populations

  18. Energy harvesting from hydroelectric systems for remote sensors

    Directory of Open Access Journals (Sweden)

    Joaquim Azevedo

    2016-10-01

    Full Text Available Hydroelectric systems are well-known for large scale power generation. However, there are virtually no studies on energy harvesting with these systems to produce tens or hundreds of milliwatts. The goal of this work was to study which design parameters from large-scale systems can be applied to small-scale systems. Two types of hydro turbines were evaluated. The first one was a Pelton turbine which is suitable for high heads and low flow rates. The second one was a propeller turbine used for low heads and high flow rates. Several turbine geometries and nozzle diameters were tested for the Pelton system. For the propeller, a three-bladed turbine was tested for different heads and draft tubes. The mechanical power provided by these turbines was measured to evaluate the range of efficiencies of these systems. A small three-phase generator was developed for coupling with the turbines in order to evaluate the generated electric power. Selected turbines were used to test battery charging with hydroelectric systems and a comparison between several efficiencies of the systems was made.

  19. Environmental consequences of hydroelectric development: the role of facility size and type

    International Nuclear Information System (INIS)

    Gleick, P.H.

    1992-01-01

    The development of hydroelectric power throughout the world is receiving renewed attention as the economic, political, and environmental costs of conventional energy production rise. There is currently a perception that hydroelectricity has environmental and economic advantages over electricity produced by conventional energy technologies, but there is a paucity of information about the environmental impacts of hydroelectric facilities as a function of size and type. We characterize the environmental impacts of hydroelectric developments and quantify these impacts as a function of the size and type of project. Several unexpected conclusions arise from our analysis. For most hydroelectric facilities, size, as measured by installed capacity, is not necessarily a good indicator or the severity of environmental costs. For impacts such as land flooded and evaporative water lost, smaller facilities cause greater environmental disruptions per unit of energy produced than do larger facilities. (Author)

  20. People's perception on impacts of hydro-power projects in Bhagirathi river valley, India.

    Science.gov (United States)

    Negi, G C S; Punetha, Disha

    2017-04-01

    The people's perception on environmental and socio-economic impacts due to three hydro-electric projects (HEPs; commissioned and under construction) were studied in the north-west Indian Himalaya. Surveys among 140 project-affected people (PAPs) using a checklist of impacts indicate that among the negative impacts, decrease in flora/fauna, agriculture, flow of river, aesthetic beauty; and increase in water pollution, river bed quarrying for sand/stone, human settlement on river banks and social evils; and among the positive impacts, increase in standard of living, road connectivity, means of transport, public amenities, tourism and environmental awareness were related with HEPs. The PAPs tend to forget the negative impacts with the age of the HEPs after it becomes functional, and the positive impacts seem to outweigh the negative impacts. Study concludes that it is difficult to separate the compounding impacts due to HEP construction and other anthropogenic and natural factors, and in the absence of cause-and-effect analyses, it is hard to dispel the prevailing notion that HEPs are undesirable in the study area that led to agitations by the environmentalists and stopped construction of one of these HEPs. To overcome the situation, multi-disciplinary scientific studies involving the PAPs need to be carried out in planning and decision-making to make HEPs environment friendly and sustainable in this region. There is also a need to adopt low carbon electric power technologies and promote a decentralized energy strategy through joint ventures between public and private companies utilizing locally available renewable energy resources.

  1. 18 CFR 292.209 - Exceptions from requirements for hydroelectric small power production facilities located at a new...

    Science.gov (United States)

    2010-04-01

    ... requirements for hydroelectric small power production facilities located at a new dam or diversion. 292.209... Exceptions from requirements for hydroelectric small power production facilities located at a new dam or... the Federal Power Act, at which non-Federal hydroelectric development is permissible; or (2) An...

  2. 76 FR 22128 - Notice of Intent To Accept Proposals, Select One Lessee, and Contract for Hydroelectric Power...

    Science.gov (United States)

    2011-04-20

    ... for Hydroelectric Power Development at the Granby Dam Outlet, a Feature of the Colorado-Big Thompson... Reclamation, will consider proposals for non-Federal development of hydroelectric power at Granby Dam Outlet of the C-BT, Colorado. Reclamation is considering such hydroelectric power development under a lease...

  3. 76 FR 14653 - BOST3 Hydroelectric Company, LLC (BOST3); Notice of Application Accepted for Filing and...

    Science.gov (United States)

    2011-03-17

    ... Hydroelectric Company, LLC (BOST3); Notice of Application Accepted for Filing and Soliciting Motions To Intervene and Protests Take notice that the following hydroelectric application has been filed with the... No.: P-12756-003. c. Date filed: July 26, 2010. d. Applicant: BOST3 Hydroelectric Company, LLC (BOST3...

  4. 76 FR 14651 - BOST4 Hydroelectric Company, LLC; Notice of Application Tendered for Filing With the Commission...

    Science.gov (United States)

    2011-03-17

    ... Hydroelectric Company, LLC; Notice of Application Tendered for Filing With the Commission and Soliciting Additional Study Requests Take notice that the following hydroelectric application has been filed with the... No.: P-12757-003. c. Date filed: February 24, 2011. d. Applicant: BOST4 Hydroelectric Company, LLC...

  5. 77 FR 785 - BOST5 Hydroelectric Company, LLC, (BOST5); Notice of Application Accepted for Filing and...

    Science.gov (United States)

    2012-01-06

    ... Hydroelectric Company, LLC, (BOST5); Notice of Application Accepted for Filing and Soliciting Motions To Intervene and Protests Take notice that the following hydroelectric application has been filed with the... No.: P-12758-003. c. Date filed: March 28, 2011. d. Applicant: BOST5 Hydroelectric Company, LLC...

  6. 76 FR 21885 - BOST5 Hydroelectric Company, LLC; Notice of Application Tendered for Filing With the Commission...

    Science.gov (United States)

    2011-04-19

    ... Hydroelectric Company, LLC; Notice of Application Tendered for Filing With the Commission and Soliciting Additional Study Requests Take notice that the following hydroelectric application has been filed with the... No.: P-12758-003. c. Date filed: March 28, 2011. d. Applicant: BOST5 Hydroelectric Company, LLC...

  7. 77 FR 786 - BOST4 Hydroelectric Company, LLC, (BOST4); Notice of Application Accepted for Filing and...

    Science.gov (United States)

    2012-01-06

    ... Hydroelectric Company, LLC, (BOST4); Notice of Application Accepted for Filing and Soliciting Motions To Intervene and Protests Take notice that the following hydroelectric application has been filed with the... No.: P-12757-003. c. Date filed: February 24, 2011. d. Applicant: BOST4 Hydroelectric Company, LLC...

  8. 18 CFR 292.208 - Special requirements for hydroelectric small power production facilities located at a new dam or...

    Science.gov (United States)

    2010-04-01

    ... for hydroelectric small power production facilities located at a new dam or diversion. 292.208 Section... requirements for hydroelectric small power production facilities located at a new dam or diversion. (a) A hydroelectric small power production facility that impounds or diverts the water of a natural watercourse by...

  9. RECOVERY OF AN OXISOL DEGRADED BY THE CONSTRUCTION OF A HYDROELECTRIC POWER PLANT

    Directory of Open Access Journals (Sweden)

    Joseane Carina Borges de Carvalho

    2015-12-01

    Full Text Available ABSTRACT The removal of thick layers of soil under native scrubland (Cerrado on the right bank of the Paraná River in Selvíria (State of Mato Grosso do Sul, Brazil for construction of the Ilha Solteira Hydroelectric Power Plant caused environmental damage, affecting the revegetation process of the stripped soil. Over the years, various kinds of land use and management systems have been tried, and the aim of this study was to assess the effects of these attempts to restore the structural quality of the soil. The experiment was conducted considering five treatments and thirty replications. The following treatments were applied: stripped soil without anthropic intervention and total absence of plant cover; stripped soil treated with sewage sludge and planted to eucalyptus and grass a year ago; stripped soil developing natural secondary vegetation (capoeira since 1969; pastureland since 1978, replacing the native vegetation; and soil under native vegetation (Cerrado. In the 0.00-0.20 m layer, the soil was chemically characterized for each experimental treatment. A 30-point sampling grid was used to assess soil porosity and bulk density, and to assess aggregate stability in terms of mean weight diameter (MWD and geometric mean diameter (GMD. Aggregate stability was also determined using simulated rainfall. The results show that using sewage sludge incorporated with a rotary hoe improved the chemical fertility of the soil and produced more uniform soil pore size distribution. Leaving the land to develop secondary vegetation or turning it over to pastureland produced an intermediate level of structural soil quality, and these two treatments produced similar results. Stripped soil without anthropic intervention was of the lowest quality, with the lowest values for cation exchange capacity (CEC and macroporosity, as well as the highest values of soil bulk density and percentage of aggregates with diameter size <0.50 mm, corroborated by its lower

  10. Indian Legends.

    Science.gov (United States)

    Gurnoe, Katherine J.; Skjervold, Christian, Ed.

    Presenting American Indian legends, this material provides insight into the cultural background of the Dakota, Ojibwa, and Winnebago people. Written in a straightforward manner, each of the eight legends is associated with an Indian group. The legends included here are titled as follows: Minnesota is Minabozho's Land (Ojibwa); How We Got the…

  11. Small hydroelectric power development in India: a profile

    International Nuclear Information System (INIS)

    Bhattacharya, Partha

    1993-01-01

    Small hydroelectric power plants (SHPs) have a definite role to play in the contemporary energy scenario generally as a source for supplementing the electrical energy production and particularly in remote rural areas in meeting the energy requirements of isolated communities. SHPs practically do not produce any adverse impact.However, their success depends on the ingenuity of the planners and the designers, and more importantly the convection. Another dimension to the success is the participation and involvement of the beneficiaries of the project which are more relevant for the microhydro electric schemes in the remote areas. The major factor that influences the commercial success of the SHP is marketing. It should be given due emphasis. This necessitates the SHP development activities to be more pragmatic and relevant to the society needs; an approach which is programme-based, rather than a project-oriented, is needed. (author). 4 refs

  12. Optimal control of hydroelectric facility incorporating pump storage

    International Nuclear Information System (INIS)

    Zhao, Guangzhi; Davison, Matt

    2009-01-01

    We consider a simple model of a pump-assisted hydroelectric facility operating in a market with time-varying but deterministic power prices and constant water inflows. The engineering details of the facility are described by a model containing several parameters. We present an algorithm for optimizing first the energy and then the profit produced by these plants. This algorithm allows us to describe the relationships between control trajectory and time, and between inflow and price. Remarkably, we see that under some reasonable choices of facility parameters and for power prices that are not extremely variable, the optimal profit operation of these facilities is not too different from their optimal energy operation, and the control is less affected by the price as the inflow rate increases. (author)

  13. Hydrogen-based industry from remote excess hydroelectricity

    International Nuclear Information System (INIS)

    Ouellette, N.; Rogner, H.-H.; Scott, D.S.

    1997-01-01

    This paper examines synergies, opportunities and barriers associated with hydrogen and excess hydro-electricity in remote areas. The work is based on a case study that examined the techno-economic feasibility of a new hydrogen-based industry using surplus/off-peak generating capacity of the Taltson Dam and Generating Station in the Northwest Territories, Canada. After evaluating the amount and cost of hydrogen that could be produced from the excess capacity, the study investigates three hydrogen utilization scenarios: (1) merchant liquid or compressed hydrogen, (2) hydrogen as a chemical feedstock for the production of hydrogen peroxide, (3) methanol production from biomass, oxygen and hydrogen. Hydrogen peroxide production is the most promising and attractive strategy in the Fort Smith context. The study also illustrates patterns that recur in isolated sites throughout the world. (Author)

  14. The renewal of hydroelectric concessions in competitive call

    International Nuclear Information System (INIS)

    2013-01-01

    This document discusses various issues associated with the planned competitive call on the French hydraulic power plants. The principles of this competitive call for hydroelectric concessions are first addressed: administrative regime of concessions, competitive call process, criteria of selection of the concession holder, case of 'concession of valleys', potential competitors. It outlines and discusses the difficulties of this competitive call: France is the single country to implement this procedure; it concerns a national asset; it questions the guarantee of a future use of equipment at best for the energy benefits of French consumers; the competitive call is a nice idea indeed but extremely complex. A note discusses the profitability aspects of Plants for Transfer of Energy by Pumping

  15. Ecological review of hydroelectric reservoirs in Puerto Rico

    Energy Technology Data Exchange (ETDEWEB)

    Jobin, W.R.; Ferguson, F.F.; Brown, R.

    1976-10-01

    A review of published literature and available data on the ecology of hydroelectric reservoirs and other lakes in Puerto Rico yielded various studies on unrelated elements in the aquatic ecology, but very few comprehensive investigations. The majority of the island-wide studies pertained to surveys on snails related to the parasitic disease bilharzia. A survey of 28 major lakes in 1976 showed that Biomphalaria glabrata had gradually been displaced from most of the lakes by Marisa cornuarietis and Tarebia granifera, two foreign snails which do not transmit bilharzia. Of the 17 lakes containing B. glabrata in 1956, only 8 remained infested in 1966 and only 5 in 1976, twenty years after the introduction of Marisa cornuarietis. Although the trend indicates that the lakes may be safe from transmission a monitoring system is necessary before the lakes could be used for recreation.

  16. Benefits and applications of modular hydroelectric pumped storage

    International Nuclear Information System (INIS)

    Koebbe, R.S.

    1991-01-01

    This paper reports on hydroelectric pumped storage which is the only proven and most efficient technology available for energy storage. It is used by utilities to provide peak and intermediate power and to optimize overall system performance. Because of increased environmental and regulatory constraints, few acceptable sites, long schedules, and huge financial commitments, large conventional pumped storage plants, are now virtually impossible to build. As an alternative, small modular pumped storage, with project sizes ranging from 25 MW to 200 MW, was created to overcome the difficulties of conventional projects. The modular approach involves standardizing the elements of a pumped storage plant by utilizing specialized siting techniques and optimizing design, equipment, and construction. Compared with conventional pumped storage, the modular design can reduce cost and expedite schedule; reduce environmental concerns and permitting obstacles; and expand applications of energy storage on a utility's system

  17. Study of the Time Response of a Simulated Hydroelectric System

    International Nuclear Information System (INIS)

    Simani, S; Alvisi, S; Venturini, M

    2014-01-01

    This paper addresses the design of an advanced control strategy for a typical hydroelectric dynamic process, performed in the Matlab and Simulink environments. The hydraulic system consists of a high water head and a long penstock with upstream and downstream surge tanks, and is equipped with a Francis turbine. The nonlinear characteristics of hydraulic turbine and the inelastic water hammer effects were considered to calculate and simulate the hydraulic transients. With reference to the control solution, the proposed methodology relies on an adaptive control designed by means of the on-line identification of the system model under monitoring. Extensive simulations and comparison with respect to a classic hydraulic turbine speed PID regulator show the effectiveness of the proposed modelling and control tools

  18. Short-cut design of small hydroelectric plants

    Energy Technology Data Exchange (ETDEWEB)

    Voros, N.G.; Kiranoudis, C.T.; Maroulis, Z.B. [National Technical Univ. of Athens, Dept. of Chemical Engineering, Athens (Greece)

    2000-04-01

    The problem of designing small hydroelectric plants has been properly analysed and addressed in terms of maximising the economic benefits of the investment. An appropriate empirical model describing hydroturbine efficiency was developed. An overall plant model was introduced by taking into account their construction characteristics and operational performance. The hydrogeographical characteristics for a wide range of sites have been appropriately analysed and a model that involves significant physical parameters has been developed. The design problem was formulated as a mathematical programming problem, and solved using appropriate programming techniques. The optimisation covered a wide range of site characteristics and three types of commercially available hydroturbines. The methodology introduced an empirical short-cut design equation for the determination of the optimum nominal flowrate of the hydroturbines and the estimation of the expected unit cost of electricity produced, as well as of the potential amount of annually recovered energy. (Author)

  19. Ultra-low-head hydroelectric technology: A review

    Energy Technology Data Exchange (ETDEWEB)

    Zhou, Daqing; Deng, Zhiqun (Daniel)

    2017-10-01

    In recent years, distributed renewable energy-generation technologies, such as wind and solar, have developed rapidly. Nevertheless, the utilization of ultra-low-head (ULH) water energy (i.e., situations where the hydraulic head is less than 3 m or the water flow is more than 0.5 m/s with zero head) has received little attention. We believe that, through technological innovations and cost reductions, ULH hydropower has the potential to become an attractive, renewable, and sustainable resource. This paper investigates potential sites for ULH energy resources, the selection of relevant turbines and generators, simplification of civil works, and project costs. This review introduces the current achievements on ULH hydroelectric technology to stimulate discussions and participation of stakeholders to develop related technologies for further expanding its utilization as an important form of renewable energy.

  20. Hydroelectric developments in Nunavik : update on impact benefit agreements

    Energy Technology Data Exchange (ETDEWEB)

    Aatami, P. [Makivik Corp., Makivik, NF (Canada)

    2004-07-01

    The Partnership Agreement on Economic and Community Development in Nunavik is intended to accelerate development of natural resources in Nunavik and promote autonomy of the Inuit regional organizations. This can be accomplished through hydroelectric projects, mining, sport hunting, outfitting and tourism. In recent years, activities in these domains have raised fundamental questions pertaining to the advantages and disadvantages of resource development. The role that the Impact Benefit Agreement has on business opportunities has been examined more closely. The results of the Impact Benefit Agreement and its implication for the Cree Nation and hydro development in untapped regions of northern Quebec were described along with the role of the parties in financing future projects. An overview of the costs, benefits and considerations for hydro opportunities in northern Quebec was presented with reference to the electricity grid and the incentives for large investment. 1 fig.

  1. Study of the Time Response of a Simulated Hydroelectric System

    Science.gov (United States)

    Simani, S.; Alvisi, S.; Venturini, M.

    2014-12-01

    This paper addresses the design of an advanced control strategy for a typical hydroelectric dynamic process, performed in the Matlab and Simulink environments. The hydraulic system consists of a high water head and a long penstock with upstream and downstream surge tanks, and is equipped with a Francis turbine. The nonlinear characteristics of hydraulic turbine and the inelastic water hammer effects were considered to calculate and simulate the hydraulic transients. With reference to the control solution, the proposed methodology relies on an adaptive control designed by means of the on-line identification of the system model under monitoring. Extensive simulations and comparison with respect to a classic hydraulic turbine speed PID regulator show the effectiveness of the proposed modelling and control tools.

  2. Hydroelectric plant turbine, stream and spillway flow measurement

    Energy Technology Data Exchange (ETDEWEB)

    Lampa, J.; Lemon, D.; Buermans, J. [ASL AQ Flow Inc., Sidney, BC (Canada)

    2004-07-01

    This presentation provided schematics of the turbine flow measurements and typical bulb installations at the Kootenay Canal and Wells hydroelectric power facilities in British Columbia. A typical arrangement for measuring stream flow using acoustic scintillation was also illustrated. Acoustic scintillation is portable, non-intrusive, suitable for short intakes, requires minimal maintenance and is cost effective and accurate. A comparison between current meters and acoustic scintillation was also presented. Stream flow measurement is valuable in evaluating downstream areas that are environmentally important for fish habitat. Stream flow measurement makes it possible to define circulation. The effects of any changes can be assessed by combining field measurements and numerical modelling. The presentation also demonstrated that computational fluid dynamics modelling appears promising in determining stream flow and turbulent flow at spillways. tabs., figs.

  3. A look at the changing environment along the Indian coasts

    Digital Repository Service at National Institute of Oceanography (India)

    Desai, B.N.; Das, V.K.

    Increased human activity along the Indian coastline has exerted pressure on its morphology and ecology. The factors responsible for morphological changes like subsidence, rising sea level, storms, storm surges, sediment input from rivers, sediment...

  4. Journal of Earth System Science | Indian Academy of Sciences

    Indian Academy of Sciences (India)

    Modelling and analyzing the watershed dynamics using Cellular Automata (CA)– Markov ... based on past trend in a hydrological unit, Choudwar watershed, India. ... Centre for Oceans, Rivers, Atmosphere and Land Sciences (CORAL), Indian ...

  5. 18 CFR 16.19 - Procedures for an existing licensee of a minor hydroelectric power project or of a minor part of...

    Science.gov (United States)

    2010-04-01

    ... existing licensee of a minor hydroelectric power project or of a minor part of a hydroelectric power....19 Procedures for an existing licensee of a minor hydroelectric power project or of a minor part of a hydroelectric power project with a license not subject to sections 14 and 15 of the Federal Power Act. (a...

  6. Final Technical Report - Modernization of the Boulder Canyon Hydroelectric Project

    Energy Technology Data Exchange (ETDEWEB)

    Taddeucci, Joe [Dept. of Public Works, Boulder, CO (United States). Utilities Division

    2013-03-29

    The Boulder Canyon Hydroelectric Project (BCH) was purchased by the City of Boulder, CO (the city) in 2001. Project facilities were originally constructed in 1910 and upgraded in the 1930s and 1940s. By 2009, the two 10 MW turbine/generators had reached or were nearing the end of their useful lives. One generator had grounded out and was beyond repair, reducing plant capacity to 10 MW. The remaining 10 MW unit was expected to fail at any time. When the BCH power plant was originally constructed, a sizeable water supply was available for the sole purpose of hydroelectric power generation. Between 1950 and 2001, that water supply had gradually been converted to municipal water supply by the city. By 2001, the water available for hydroelectric power generation at BCH could not support even one 10 MW unit. Boulder lacked the financial resources to modernize the facilities, and Boulder anticipated that when the single, operational historical unit failed, the project would cease operation. In 2009, the City of Boulder applied for and received a U.S. Department of Energy (DOE) grant for $1.18 million toward a total estimated project cost of $5.155 million to modernize BCH. The federal funding allowed Boulder to move forward with plant modifications that would ensure BCH would continue operation. Federal funding was made available through the American Recovery and Reinvestment Act (ARRA) of 2009. Boulder determined that a single 5 MW turbine/generator would be the most appropriate capacity, given the reduced water supply to the plant. Average annual BCH generation with the old 10 MW unit had been about 8,500 MW-hr, whereas annual generation with a new, efficient turbine could average 11,000 to 12,000 MW-hr. The incremental change in annual generation represents a 30% increase in generation over pre-project conditions. The old turbine/generator was a single nozzle Pelton turbine with a 5-to-1 flow turndown and a maximum turbine/generator efficiency of 82%. The new unit is a

  7. Cost analysis of small hydroelectric power plants components and preliminary estimation of global cost

    International Nuclear Information System (INIS)

    Basta, C.; Olive, W.J.; Antunes, J.S.

    1990-01-01

    An analysis of cost for each components of Small Hydroelectric Power Plant, taking into account the real costs of these projects is shown. It also presents a global equation which allows a preliminary estimation of cost for each construction. (author)

  8. Impacts of nuclear and hydroelectric great projects: economical, technological, environmental and social aspects

    International Nuclear Information System (INIS)

    Rosa, L.P.; Sigaud, L.; Mielnik, O.

    1988-01-01

    Some studies about the Great Impacts of Energy Sources, mainly nuclear power plant and hydroelectric power plant, in Brazil are presented. The technological, economical, social and environmental aspects are described [pt

  9. 76 FR 76709 - Wilkesboro Hydroelectric Company, LLC; Notice of Availability of Environmental Assessment

    Science.gov (United States)

    2011-12-08

    ... DEPARTMENT OF ENERGY Federal Energy Regulatory Commission [Project No. 12642-003 North Carolina] Wilkesboro Hydroelectric Company, LLC; Notice of Availability of Environmental Assessment In accordance with the National Environmental Policy Act of 1969 and the Federal Energy Regulatory Commission's...

  10. Small scale hydroelectric power potential in Nevada: a preliminary reconnaissance survey

    Energy Technology Data Exchange (ETDEWEB)

    Cochran, G.F.; Fordham, J.W.; Richard, K.; Loux, R.

    1981-04-01

    This preliminary reconnaissance survey is intended to: develop a first estimate as to the potential number, location and characteristics of small-scale (50 kW to 15 MW) hydroelectric sites in Nevada; provide a compilation of various Federal and state laws and regulations, including tax and financing regulations, that affect small-scale hydroelectric development and provide information on sources of small-scale hydroelectric generation hardware and consultants/ contractors who do small scale hydroelectric work. The entire survey has been conducted in the office working with various available data bases. The site survey and site evaluation methods used are described, and data are tabulated on the flow, power potential, predicted capital expenditures required, etc. for 61 potential sites with measured flows and for 77 sites with derived flows. A map showing potential site locations is included. (LCL)

  11. Caxingo - a promising model for integrating the hydroelectric work camps to the site communities

    International Nuclear Information System (INIS)

    Luna, A.M.; Falcao, A.A.

    1989-01-01

    The social and economical impacts caused by the hydroelectric work camps in the sites where the hydroelectric will be constructed are studied, analysing the great supply of works when the hydroelectric is been constructed face to the reduction one when the works are concluded; the neglect by the State in providing medical and educational assistances to the neighbour populations; the appearance of a commerce in the neighbour areas; the employer stableness in the camp after the pension and the lack by the neighbour cities of a social and economical substructure to offer to the population, that come with the hydroelectric construction. A new solution for these problems is presented in the Xingo camp, where the camp will be as a district of city near to the work, with community services provide by the State and the needful substructure to its construction and the equipment provide by the concessionaire. (C.G.C.). 1 fig

  12. Legal obstacles and incentives to the development of small scale hydroelectric power in Kentucky

    Energy Technology Data Exchange (ETDEWEB)

    None,

    1980-05-01

    The legal and institutional obstacles to the development of small-scale hydroelectric energy at the state level are examined. The introductory section examines the dual regulatory system from the standpoint of the appropriate legal doctrine, the law of pre-emption, application of the law to the case of hydroelectric development, and concludes with an inquiry into the practical use of the doctrine by the FERC. Additional sections cover acquisition; liability; Department for Natural Resources and Environmental Protection; energy utilities; local regulations; incidental impacts; financial considerations; and sources of information. In Kentucky, many of the impacts have not been implemented with regard to small-scale hydroelectric energy, since in Kentucky most electricity is coal-generated and any hydroelectric power that does exist, is derived from TVA or the Army Corp of Engineer projects.

  13. Behind an ambitious megaproject in Asia: The history and implications of the Bakun hydroelectric dam in Borneo

    Energy Technology Data Exchange (ETDEWEB)

    Sovacool, Benjamin K., E-mail: bsovacool@nus.edu.sg [Lee Kuan Yew School of Public Policy, National University of Singapore, Oei Tiong Ham Building, 469C Bukit Timah Road, Singapore 259772 (Singapore); Bulan, L.C. [Lee Kuan Yew School of Public Policy, National University of Singapore, Oei Tiong Ham Building, 469C Bukit Timah Road, Singapore 259772 (Singapore)

    2011-09-15

    Using a case-study, inductive, narrative approach, this article explores the history, drivers, benefits, and barriers to the Bakun Hydroelectric Project in East Malaysia. Situated on the island of Borneo, Bakun Dam is a 204 m high concrete face, rock filled dam on the Balui River in the Upper Rajang Basin in the rainforests of Sarawak. Bakun Dam and its affiliated infrastructure could be the single largest and most expensive energy project ever undertaken in Southeast Asia. Based on data collected through site visits, original field research in Sarawak, and more than 80 research interviews, the article begins by teasing out the complex history and drivers behind the Bakun project before identifying a set of potential social, political, and economic benefits the project could deliver. It then delves into six sets of barriers in the technical, economic, political, legal and regulatory, social, and environmental realms. We find that Bakun illustrates how centralized energy megaprojects, while ostensibly championed for reasons of economies of scale and the ability to bring about transformational change in the shortest period of time, often fail to address broader development goals such as fighting energy poverty and improving the livelihoods of the local communities they are supposed to serve. - Highlights: > Bakun Dam is concrete face, rock filled dam on the Balui River in the Upper Rajang Basin in the rainforests of Sarawak. > The project faces technical, economic, political, legal and regulatory, social, and environmental barriers. > We conclude the project will fail to fight energy poverty or improve the livelihoods of local populations.

  14. Snake River Sockeye salmon habitat and limnological research. Annual report 1995

    International Nuclear Information System (INIS)

    Teuscher, D.; Taki, D.

    1996-05-01

    This report contains studies which are part of the Bonneville Power Administration's program to protect, mitigate, and enhance fish and wildlife affected by the development and operation of hydroelectric facilities on the Columbia River and its tributaries. Attention is focused on population monitoring studies in the Sawtooth Valley Lakes. Selected papers are indexed separately for inclusion in the Energy Science and Technology Database

  15. Costa Rica: Hydroelectric utility Energía Global finances upstream reforestation

    OpenAIRE

    Energía Global (Global Energy S.A.); The National Forest Office; National Fund for Forest Financing (FONAFIFO)

    2006-01-01

    Metadata only record The goal of Energía Global is to increase both the stream flow and decrease sedimentation in the hydroelectric reservoirs. They are attempting to do this by reforestation projects as well as forest conservation. The sources of revenue for this project are from the private hydroelectric company and the government through taxes on fossil fuels. PES-1 (Payments for Environmental Services Associate Award)

  16. Production costs: U.S. hydroelectric power plants, 4th Edition

    International Nuclear Information System (INIS)

    Anon.

    1993-01-01

    The book provides 1991 operation and maintenance expenses for over 800 conventional and pumped-storage hydroelectric power plants. Report shows operator and plant name, plant year-in-service, installed capacity, 1991 net generation, O ampersand M expenses, total production costs and current plant capitalization. Fifty eight percent of the utility-owned hydroelectric plants in the US are covered by this report. Data diskette provides additional capital and production cost accounts and number of employees for each plant

  17. The Feasibility of Small Hydro-Electric Generation in a Large Urban Area

    OpenAIRE

    Benson Y. Zhang; Adam Taylor

    2012-01-01

    The possibilities of generating electric power from relatively small hydro-electric sources in a large urban area is investigated. Two different aspects of hydro-electric sources have been studied: storm/waste water pipes in large multi-tenanted residential buildings and urban storm water discharge area (CSI area). The potential to generate from these sources has been investigated using a micro-turbine. The potential electric power which could be extracted from the sources was estimated using...

  18. Evaluate Status of Pacific Lamprey in the Clearwater River Drainage, Idaho: Annual Report 2001.

    Energy Technology Data Exchange (ETDEWEB)

    Cochnauer, Tim; Claire, Christopher

    2002-12-01

    Recent decline of Pacific lamprey Lampetra tridentata adult migrants to the Snake River drainage has focused attention on the species. Adult Pacific lamprey counted passing Ice Harbor Dam fishway averaged 18,158 during 1962-69 and 361 during 1993-2000. Human resource manipulations in the Snake River and Clearwater River drainages have altered ecosystem habitat in the last 120 years, likely impacting the productive potential of Pacific lamprey habitat. Timber harvest, stream impoundment, road construction, grazing, mining, and community development have dominated habitat alteration in the Clearwater River system and Snake River corridor. Hydroelectric projects in the Snake River corridor impact juvenile/larval Pacific lamprey outmigrants and returning adults. Juvenile and larval lamprey outmigrants potentially pass through turbines, turbine bypass/collection systems, and over spillway structures at the four lower Snake River hydroelectric dams. Clearwater River drainage hydroelectric facilities have impacted Pacific lamprey populations to an unknown degree. The Pacific Power and Light Dam on the Clearwater River in Lewiston, Idaho, restricted chinook salmon Oncorhynchus tshawytscha passage in the 1927-1940 period, altering the migration route of outmigrating Pacific lamprey juveniles/larvae and upstream adult migrants (1927-1972). Dworshak Dam, completed in 1972, eliminated Pacific lamprey spawning and rearing in the North Fork Clearwater River drainage. Construction of the Harpster hydroelectric dam on the South Fork of the Clearwater River resulted in obstructed fish passage 1949-1963. Through Bonneville Power Administration support, the Idaho Department of Fish and Game continued investigation into the status of Pacific lamprey populations in Idaho's Clearwater River drainage in 2001. Trapping, electrofishing, and spawning ground redd surveys were used to determine Pacific lamprey distribution, life history strategies, and habitat requirements in the South

  19. Spatial and seasonal responses of precipitation in the Ganges and Brahmaputra river basins to ENSO and Indian Ocean dipole modes: implications for flooding and drought

    Science.gov (United States)

    Pervez, M. S.; Henebry, G. M.

    2014-02-01

    We evaluated the spatial and temporal responses of precipitation in the basins as modulated by the El Niño Southern Oscillation (ENSO) and Indian Ocean (IO) dipole modes using observed precipitation records at 43 stations across the Ganges and Brahmaputra basins from 1982 to 2010. Daily observed precipitation records were extracted from Global Surface Summary of the Day dataset and spatial and monthly anomalies were computed. The anomalies were averaged for the years influenced by climate modes combinations. Occurrences of El Niño alone significantly reduced (60% and 88% of baseline in the Ganges and Brahmaputra basins, respectively) precipitation during the monsoon months in the northwestern and central Ganges basin and across the Brahmaputra basin. In contrast, co-occurrence of La Niña and a positive IO dipole mode significantly enhanced (135% and 160% of baseline, respectively) precipitation across both basins. During the co-occurrence of neutral phases in both climate modes (occurring 13 out of 28 yr), precipitation remained below average to average in the agriculturally extensive areas of Haryana, Uttar Pradesh, Bihar, eastern Nepal, and the Rajshahi district in Bangladesh in the Ganges basin and northern Bangladesh, Meghalaya, Assam, and Arunachal Pradesh in the Brahmaputra basin. This pattern implies that a regular water deficit is likely in these areas with implications for the agriculture sector due to its reliance on consistent rainfall for successful production. Major flooding and drought occurred as a consequence of the interactive effects of the ENSO and IO dipole modes, with the sole exception of extreme precipitation and flooding during El Niño events. This observational analysis will facilitate well informed decision making in minimizing natural hazard risks and climate impacts on agriculture, and supports development of strategies ensuring optimized use of water resources in best management practice under changing climate.

  20. Environmental mitigation at hydroelectric projects. Volume 2, Benefits and costs of fish passage and protection

    Energy Technology Data Exchange (ETDEWEB)

    Francfort, J.E.; Rinehart, B.N.; Sommers, G.L. [EG and G Idaho, Inc., Idaho Falls, ID (United States); Cada, G.F.; Jones, D.W. [Oak Ridge National Lab., TN (United States); Dauble, D.D. [Pacific Northwest Lab., Richland, WA (United States); Hunt, R.T. [Hunt (Richard) Associates, Inc., Concord, NH (United States); Costello, R.J. [Northwest Water Resources Advisory Services (United States)

    1994-01-01

    This study examines envirorunental mitigation practices that provide upstream and downstream fish passage and protection at hydroelectric projects. The study includes a survey of fish passage and protection mitigation practices at 1,825 hydroelectric plants regulated by the Federal Energy Regulatory Commission (FERC) to determine frequencies of occurrence, temporal trends, and regional practices based on FERC regions. The study also describes, in general terms, the fish passage/protection mitigation costs at 50 non-Federal hydroelectric projects. Sixteen case studies are used to examine in detail the benefits and costs of fish passage and protection. The 16 case studies include 15 FERC licensed or exempted hydroelectric projects and one Federally-owned and-operated hydroelectric project. The 16 hydroelectric projects are located in 12 states and range in capacity from 400 kilowatts to 840 megawatts. The fish passage and protection mitigation methods at the case studies include fish ladders and lifts, an Eicher screen, spill flows, airburst-cleaned inclined and cylindrical wedgewire screens, vertical barrier screens, and submerged traveling screens. The costs, benefits, monitoring methods, and operating characteristics of these and other mitigation methods used at the 16 case studies are examined.

  1. Confederated Tribes Umatilla Indian Reservation (CTUIR) Umatilla Anadromous Fisheries Habitat Project : A Columbia River Basin Fish Habitat Project : Annual Report Fiscal Year 2007.

    Energy Technology Data Exchange (ETDEWEB)

    Hoverson, Eric D.; Amonette, Alexandra

    2008-12-02

    The Umatilla Anadromous Fisheries Habitat Project (UAFHP) is an ongoing effort to protect, enhance, and restore riparian and instream habitat for the natural production of anadromous salmonids in the Umatilla River Basin, Northeast Oregon. Flow quantity, water temperature, passage, and lack of in-stream channel complexity have been identified as the key limiting factors in the basin. During the 2007 Fiscal Year (FY) reporting period (February 1, 2007-January 31, 2008) primary project activities focused on improving instream and riparian habitat complexity, migrational passage, and restoring natural channel morphology and floodplain function. Eight fisheries habitat enhancement projects were implemented on Meacham Creek, Camp Creek, Greasewood Creek, Birch Creek, West Birch Creek, and the Umatilla River. Specific restoration actions included: (1) rectifying five fish passage barriers on four creeks, (2) planting 1,275 saplings and seeding 130 pounds of native grasses, (3) constructing two miles of riparian fencing for livestock exclusion, (4) coordinating activities related to the installation of two off-channel, solar-powered watering areas for livestock, and (5) developing eight water gap access sites to reduce impacts from livestock. Baseline and ongoing monitoring and evaluation activities were also completed on major project areas such as conducting photo point monitoring strategies activities at the Meacham Creek Large Wood Implementation Project site (FY2006) and at all existing easements and planned project sites. Fish surveys and aquatic habitat inventories were conducted at project sites prior to implementation. Monitoring plans will continue throughout the life of each project to oversee progression and inspire timely managerial actions. Twenty-seven conservation easements were maintained with 23 landowners. Permitting applications for planned project activities and biological opinions were written and approved. Project activities were based on a variety

  2. Impact of LULC change on the runoff, base flow and evapotranspiration dynamics in eastern Indian river basins during 1985-2005 using variable infiltration capacity approach

    Science.gov (United States)

    Das, Pulakesh; Behera, Mukunda Dev; Patidar, Nitesh; Sahoo, Bhabagrahi; Tripathi, Poonam; Behera, Priti Ranjan; Srivastava, S. K.; Roy, Partha Sarathi; Thakur, Praveen; Agrawal, S. P.; Krishnamurthy, Y. V. N.

    2018-03-01

    As a catchment phenomenon, land use and land cover change (LULCC) has a great role in influencing the hydrological cycle. In this study, decadal LULC maps of 1985, 1995, 2005 and predicted-2025 of the Subarnarekha, Brahmani, Baitarani, Mahanadi and Nagavali River basins of eastern India were analyzed in the framework of the variable infiltration capacity (VIC) macro scale hydrologic model to estimate their relative consequences. The model simulation showed a decrease in ET with 0.0276% during 1985-1995, but a slight increase with 0.0097% during 1995-2005. Conversely, runoff and base flow showed an overall increasing trend with 0.0319 and 0.0041% respectively during 1985-1995. In response to the predicted LULC in 2025, the VIC model simulation estimated reduction of ET with 0.0851% with an increase of runoff by 0.051%. Among the vegetation parameters, leaf area index (LAI) emerged as the most sensitive one to alter the simulated water balance. LULC alterations via deforestation, urbanization, cropland expansions led to reduced canopy cover for interception and transpiration that in turn contributed to overall decrease in ET and increase in runoff and base flow. This study reiterates changes in the hydrology due to LULCC, thereby providing useful inputs for integrated water resources management in the principle of sustained ecology.

  3. Flood Frequency Analysis Under Non-stationarity Conditions: the Case of Southern Brazilian Hydroelectric Power Plants

    Science.gov (United States)

    Bartiko, Daniel; Chaffe, Pedro; Bonumá, Nadia

    2017-04-01

    Floods may be strongly affected by climate, land-use, land-cover and water infrastructure changes. However, it is common to model this process as stationary. This approach has been questioned, especially when it involves estimate of the frequency and magnitude of extreme events for designing and maintaining hydraulic structures, as those responsible for flood control and dams safety. Brazil is the third largest producer of hydroelectricity in the world and many of the country's dams are located in the Southern Region. So, it seems appropriate to investigate the presence of non-stationarity in the affluence in these plants. In our study, we used historical flood data from the Brazilian National Grid Operator (ONS) to explore trends in annual maxima in river flow of the 38 main rivers flowing to Southern Brazilian reservoirs (records range from 43 to 84 years). In the analysis, we assumed a two-parameter log-normal distribution a linear regression model was applied in order to allow for the mean to vary with time. We computed recurrence reduction factors to characterize changes in the return period of an initially estimated 100 year-flood by a log-normal stationary model. To evaluate whether or not a particular site exhibits positive trend, we only considered data series with linear regression slope coefficients that exhibit significance levels (p<0,05). The significance level was calculated using the one-sided Student's test. The trend model residuals were analyzed using the Anderson-Darling normality test, the Durbin-Watson test for the independence and the Breusch-Pagan test for heteroscedasticity. Our results showed that 22 of the 38 data series analyzed have a significant positive trend. The trends were mainly in three large basins: Iguazu, Uruguay and Paranapanema, which suffered changes in land use and flow regularization in the last years. The calculated return period for the series that presented positive trend varied from 50 to 77 years for a 100 year

  4. Atmospheric nitrogen deposition budget in a subtropical hydroelectric reservoir (Nam Theun II case study, Lao PDR)

    Science.gov (United States)

    Adon, Marcellin; Galy-Lacaux, Corinne; Serça, Dominique; Guerin, Frederic; Guedant, Pierre; Vonghamsao, Axay; Rode, Wanidaporn

    2016-04-01

    With 490 km² at full level of operation, Nam Theun 2 (NT2) is one of the largest hydro-reservoir in South East Asia. NT2 is a trans-basin hydropower project that diverts water from the Nam Theun river (a Mekong tributary) to the Xe Ban Fai river (another Mekong tributary). Atmospheric deposition is an important source of nitrogen (N), and it has been shown that excessive fluxes of N from the atmosphere has resulted in eutrophication of many coastal waters. A large fraction of atmospheric N input is in the form of inorganic N. This study presents an estimation of the atmospheric inorganic nitrogen budget into the NT2 hydroelectric reservoir based on a two-year monitoring (July 2010 to July 2012) including gas concentrations and precipitation. Dry deposition fluxes are calculated from monthly mean surface measurements of NH3, HNO3 and NO2 concentrations (passive samplers) together with simulated deposition velocities, and wet deposition fluxes from NH4+ and NO3- concentrations in single event rain samples (automated rain sampler). Annual rainfall amount was 2500 and 3160 mm for the two years. The average nitrogen deposition flux is estimated at 1.13 kgN.ha-1.yr-1 from dry processes and 5.52 kgN.ha-1.yr-1 from wet ones, i.e., an average annual total nitrogen flux of 6.6 kgN.ha-1.yr-1 deposited into the NT2 reservoir. The wet deposition contributes to 83% of the total N deposition. The nitrogen deposition budget has been also calculated over the rain tropical forest surrounding the reservoir. Due to higher dry deposition velocities above forested ecosystems, gaseous dry deposition flux is estimated at 4.0 kgN.ha-1.yr-1 leading to a total nitrogen deposition about 9.5 kgN.ha-1.yr-1. This result will be compared to nitrogen deposition in the African equatorial forested ecosystems in the framework of the IDAF program (IGAC-DEBITS-AFrica).

  5. An environmental overview of the Cat Arm hydroelectric development

    International Nuclear Information System (INIS)

    Barnes, J.L.

    1987-01-01

    The Cat Arm Dam hydroelectric development in Newfoundland comprises 10 dams, three tunnels, two canals and a 127 MW powerhouse. The scheme develops 127 MW from 380.5 m of head and comprises: ten dams of varying heights up to 53 m; a bathtub type overflow spillway 330 m in length; a 230 m long inverted U-shaped diversion tunnel; an 800 m long, inverted U-shaped low pressure forebay tunnel; two bog and rock cut tunnels leading to and from the forebay tunnels; a surface powerhouse containing two Pelton turbines; and a 178 km long, 230 kV transmission line. An overview is provided of the environmental assessment, project impacts, and cost of environmental protection associated with the project. Impacts were centered around fish and aquatic life in the created reservoir and downstream of the powerhouse, loss of ungulate (moose and caribou) habitat due to flooding, loss of forestry resources due to flooding, and the disturbance of land during construction. The overall cost of environmental protection was $7,977,000, only 2% of the total project cost. 17 refs., 1 tab

  6. Sustainable siting procedure of small hydroelectric plants: The Greek experience

    International Nuclear Information System (INIS)

    Tsoutsos, Theocharis; Maria, Efpraxia; Mathioudakis, Vassilis

    2007-01-01

    This paper aims to present the procedure under which a sustainable plant, like a small hydroelectric plant (SHP), can be installed and deployed, especially in countries with complicated administrative and legislative systems. Those must be defined by the rules that characterize sustainable spatial planning, which aims at the environmental protection, the insurance of better living conditions and finally at the economic development within the frame of the principle of sustainability and its three basic dimensions: social, economical and environmental. The main principles of spatial planning are accepted from the jurisprudence of the Hellenic Council of State, either as an appropriate condition for the protection of important ecosystems or as specific expression of the principle of prevention of environmental damage. In this framework it is accepted that the development is experienced, initially to a total and general planning, whose essential part is the assessment and modification of distributed land uses. Besides, the main characteristics of the siting of SHPs and the criteria demanded for their smooth integration and operation are presented

  7. Hydroelectric power plant with variable flow on drinking water adduction

    Science.gov (United States)

    Deaconu, S. I.; Babău, R.; Popa, G. N.; Gherman, P. L.

    2018-01-01

    The water feeding system of the urban and rural localities is mainly collected with feed pipes which can have different lengths and different levels. Before using, water must be treated. Since the treatment take place in the tanks, the pressure in the inlet of the station must be diminished. Many times the pressure must be reduced with 5-15 Barr and this is possible using valves, cavils, and so on. The flow capacity of the water consumption is highly fluctuating during one day, depending on the season, etc. This paper presents a method to use the hydroelectric potential of the feed pipes using a hydraulic turbine instead of the classical methods for decreasing the pressure. To avoid the dissipation of water and a good behavior of the power parameters it is used an asynchronous generator (AG) which is coupled at the electrical distribution network through a static frequency converter (SFC). The turbine has a simple structure without the classical devices (used to regulate the turbine blades). The speed of rotation is variable, depending on the necessary flow capacity in the outlet of the treatment station. The most important element of the automation is the static frequency converter (SFC) which allows speeds between 0 and 1.5 of the rated speed of rotation and the flow capacity varies accordingly with it.

  8. Have Norwegian producers of hydroelectric power wasted the water?

    International Nuclear Information System (INIS)

    2003-01-01

    Norwegian producers of hydroelectric power have been criticized for having exported power to Sweden during the autumn and winter 2003/2004. As this analysis shows, although the reservoir level in Norway was below normal in October already, the negative deviation from the normal reservoir level was even greater in Sweden till the end of the year. Also when the magnitude of the reserve is measured relative to the number of weeks with normal winter production for which it lasts, the situation was worse in Sweden than in Norway. After New Year the deviation from the normal reservoir level has been much the same in the two countries and has changed in parallel. During this period the exchange between the two countries has approximately balanced and the power flow from Sweden to Norway has grown gradually. With this as a background, there is no basis for asserting that the Norwegian producers have managed the water resources in an irresponsible way. In general, the power flow and the water resource management in the two countries appear reasonable considering the water influx and the prices. Different market imperfections may nevertheless have rendered the water resource management socially less then optimal.

  9. The Manitoba Hydro-Electric Board 50. annual report

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2001-07-01

    This document presents the financial statements for The Manitoba Hydro-Electric Board (Manitoba Hydro) for the fiscal year ended March 31, 2001. Manitoba Hydro was proud to report no electricity rate increase for the period 2000-2001, a feat realized for the fifth consecutive year for most customer groups. Financial and production highlights were first presented, followed by the vision mission and goals of Manitoba Hydro. Manitoba Hydro serves 403 000 customers in the province with electric energy, and 248 000 customers with natural gas service mainly in the south of the province. Electricity export sale agreements are in place with more than 35 utilities and marketers in the United States, Ontario and Saskatchewan. Self-renewing waterpower is used to generate the bulk of the electricity. The transmission and distribution lines stretch over 100 000 kilometres. Manitoba Hydro is the fourth largest energy utility in Canada based on capital assets. A review of the year was presented, as well as a brief historical overview of Manitoba Hydro. The financial review section discussed the management report, the Auditor's report. Included in this section were various statement sheets, namely the consolidated statement of income and retained earnings, consolidated balance sheet, consolidated statement of cash flows, followed by some notes to the consolidated financial statements. Consolidated financial statistics and operating statistics - 10-year overview were presented. A brief presentation of the Board members and senior officers ended this report. tabs. figs.

  10. Counter rotating type hydroelectric unit suitable for tidal power station

    International Nuclear Information System (INIS)

    Kanemoto, T; Suzuki, T

    2010-01-01

    The counter rotating type hydroelectric unit, which is composed of the axial flow type tandem runners and the peculiar generator with double rotational armatures,was proposed to utilize effectively the tidal power. In the unit, the front and the rear runners counter drive the inner and the outer armatures of the generator, respectively. Besides, the flow direction at the rear runner outlet must coincide with the flow direction at the front runner inlet, because the angular momentum through the rear runner must coincides with that through the front runner. That is, the flow runs in the axial direction at the rear runner outlet while the axial inflow at the front runner inlet. Such operations are suitable for working at the seashore with rising and falling tidal flows, and the unit may be able to take place of the traditional bulb type turbines. The tandem runners were operated at the on-cam conditions, in keeping the induced frequency constant. The output and the hydraulic efficiency are affected by the adjustment of the front and the blade setting angles. The both optimum angles giving the maximum output and/or efficiency were presented at the various discharges/heads. To promote more the tidal power generation by this type unit, the runners were also modified so as to be suitable for both rising and falling flows. The hydraulic performances are acceptable while the output is determined mainly by the trailing edge profiles of the runner blades.

  11. Hydroelectric power and global environmental problems: benefits and environmental impacts

    International Nuclear Information System (INIS)

    Chabot, B.

    1992-01-01

    The risk of global warming is one of the most serious global environmental problems. It is due to the increase of greenhouse gases emissions, mainly because of the use of fossil fuels in the energy sector, particularly for electricity generation. At an international level, experts now agree that measures are to be taken to reduce this risk. In the energy sector, an improvement of energy efficiency and an increase of nuclear electricity generation are often presented as the best available solutions. Renewable energy sources are often presented as a solution with a negligible potential impact, and sometimes, hydro power is even forgotten, or its coasts and its potential impacts on local environment are presented as an obstacle to its positive contribution to the reduction of global warming risk. Without denying the positive impacts of other solutions, this paper explains the possibilities and the benefits of an increased use of hydroelectric power, when implemented with a minimum impact on local environment and with a synergistic effect with the rational use of generated energy, in order to have access to a sustainable development. 19 refs., 6 figs

  12. Joint Venture Modes of Water Conservancy and Hydroelectric Engineering

    Directory of Open Access Journals (Sweden)

    Zhiding Chen

    2013-07-01

    Full Text Available With the long construction period, the giant scope and complex technology, water conservancy and hydroelectric engineering construction has large investment. In the fully competitive water conservancy and hydropower project construction contracting market, it is almost impossible for a company to contract with a water conservancy and hydropower project independently. Therefore, water conservancy and hydropower project construction can be contracted by several construction companies together, to play each company's strengths, lower offer, improve project quality, shorten the construction period and win the competition. In this paper, we started from the definition of Joint Venture, summed up the forms of Joint Venture in water conservancy and hydropower engineering, proposed that the JV modes can be divided into domestic and international union, tight mode, half-tight mode, loose mode, incorporation and consortium. Furthermore, we analyzed the advantages and disadvantages of Joint Venture. Put forward that the JV can relieve the owner from interfacial administrative work, reduce risk of engineering, and raise the success rate of engineering contract, improve the correctness of price and increase the opportunity of project contracting, Learn from other members, enhance technology and management and make full use of idle resources

  13. Influence of environmental factors on mercury release in hydroelectric reservoirs

    Energy Technology Data Exchange (ETDEWEB)

    Morrison, K.; Therien, N.

    1991-04-01

    Due to increased mercury concentrations in fish in hydro-electric reservoirs after flooding, a study was carried out to evaluate the release and transformation of mercury due to vegetation and soil flooded as a result of reservoir creation. Samples of vegetation and soils were immersed in water and concentrations of total mercury, methylmercury and nutrients were followed. The effects of anoxia, pH and temperature on release and transformation were examined. An existing dynamic model of decomposition of flooded materials in reservoirs was modified to include mercury release and transformation, and was calibrated to the experimental data. Amounts of mercury released by the different substrates was of the same order of magnitude. Tree species contributed to the greatest amounts of methylmercury per unit biomass, but the biomass used for these was twigs and foliage. Soil released significant amounts of mercury, but methylation was very low. The model was able to fit well for all substrates except lichen. The model can be adapted to proposed reservoirs to predict nutrient and mecury release and transformation. 175 refs., 38 figs., 38 tabs.

  14. The Manitoba Hydro-Electric Board 50. annual report

    International Nuclear Information System (INIS)

    2001-01-01

    This document presents the financial statements for The Manitoba Hydro-Electric Board (Manitoba Hydro) for the fiscal year ended March 31, 2001. Manitoba Hydro was proud to report no electricity rate increase for the period 2000-2001, a feat realized for the fifth consecutive year for most customer groups. Financial and production highlights were first presented, followed by the vision mission and goals of Manitoba Hydro. Manitoba Hydro serves 403 000 customers in the province with electric energy, and 248 000 customers with natural gas service mainly in the south of the province. Electricity export sale agreements are in place with more than 35 utilities and marketers in the United States, Ontario and Saskatchewan. Self-renewing waterpower is used to generate the bulk of the electricity. The transmission and distribution lines stretch over 100 000 kilometres. Manitoba Hydro is the fourth largest energy utility in Canada based on capital assets. A review of the year was presented, as well as a brief historical overview of Manitoba Hydro. The financial review section discussed the management report, the Auditor's report. Included in this section were various statement sheets, namely the consolidated statement of income and retained earnings, consolidated balance sheet, consolidated statement of cash flows, followed by some notes to the consolidated financial statements. Consolidated financial statistics and operating statistics - 10-year overview were presented. A brief presentation of the Board members and senior officers ended this report. tabs. figs

  15. Culinary and pressure irrigation water system hydroelectric generation

    Energy Technology Data Exchange (ETDEWEB)

    Christiansen, Cory [Water Works Engineers, Pleasant Grove City, UT (United States)

    2016-01-29

    Pleasant Grove City owns and operates a drinking water system that included pressure reducing stations (PRVs) in various locations and flow conditions. Several of these station are suitable for power generation. The City evaluated their system to identify opportunities for power generation that can be implemented based on the analysis of costs and prediction of power generation and associated revenue. The evaluation led to the selection of the Battle Creek site for development of a hydro-electric power generating system. The Battle Creek site includes a pipeline that carries spring water to storage tanks. The system utilizes a PRV to reduce pressure before the water is introduced into the tanks. The evaluation recommended that the PRV at this location be replaced with a turbine for the generation of electricity. The system will be connected to the utility power grid for use in the community. A pelton turbine was selected for the site, and a turbine building and piping system were constructed to complete a fully functional power generation system. It is anticipated that the system will generate approximately 440,000 kW-hr per year resulting in $40,000 of annual revenue.

  16. Mitigative measures for the Laforge-2 hydroelectric development

    International Nuclear Information System (INIS)

    Faucher, O.; Gagnon, R.

    1995-01-01

    Corrective, preventive and enhancement measures undertaken as part of the development of the Laforge-2 Hydroelectric Power Plant, were described. The environment into which the project has been integrated was also described. General background information and technical characteristics of the Laforge-2 and Caniapiscau-Laforge diversion were provided. The Laforge-2 Mitigative Master Plan's measures for improving wildlife potential, cleaning-up of tributaries, protecting wildlife habitats, seeding around ponds and humid zones, installing platforms to encourage and facilitate the nesting of ospreys, and promoting proper harvesting of the territory, were described as corrective measures that will promote sustainable development. Contractual obligations to protect the environment were outlined. Enhancement measures described included reclamation of areas disturbed during construction, landscaping around main structures and construction of scenic lookouts. It was fully expected that the mitigative measures described for the Laforge-2 project will minimize negative impacts of the project and will maximize positive ones by improving wildlife potential in areas near the reservoir. 5 figs

  17. Resolving orographic rainfall on the Indian west coast

    Digital Repository Service at National Institute of Oceanography (India)

    Suprit, K.; Shankar, D.

    We discuss a method to obtain the spatial estimates of rainfall on the Indian west coast for calculating the surface water budget. The region includes the basin of the Mandovi River, a typical west-coast river whose catchment area includes...

  18. Journal of Earth System Science | Indian Academy of Sciences

    Indian Academy of Sciences (India)

    The sediment records along the bedrock rivers of Kachchh register imprints of the Indian summer monsoon (ISM), which is the major source of moisture to the fluvial system in western India. The Rukmawati River originates from the Katrol Hill Range in the north and flows towards the south, into the Gulf of Kachchh. The field ...

  19. What tools do we have to study the morphological effects of hydroelectric plants in developing countries? The Chilean case

    Science.gov (United States)

    Alcayaga, Hernan; Caamaño, Diego; Palma, Sebastian; Contreras, Karla

    2017-04-01

    Countries growing rates are directly related to energy production. Therefore, developed and developing nations are focused on hydropower and dam construction; on the contrary dam removal practices are significantly different among nations, demonstrating the former group a lesser interest on removing structures. Chiles hydropower generation corresponds to 50% of the current grid, having a potential capacity to double the current situation. Thus: ¿What tools can we apply to assess the potential impacts on our rivers? The goal of this project is to study two different reaches located in two separates streams in Central Chile. The Aconcagua River represents a mountain stream (i.e. steep, narrow, and confined) subject to the operation of a hydroelectric system composed by five diversion hydropower plants built during the 90`s. The Rapel River reach corresponds to the last 10km upstream to the outlet; it is a mild and wide stream that includes the gravel-sand transition. The Rapel dam operates about 25km upstream this second reach that is characterized by an 112m wall built in 1968. The Aconcagua hydropower system was characterized within a GIS environment and a morphological response conceptual model applied. The model uses two indexes to evaluate changes in i) channel forming discharge and ii) sediment supply. The provided response shows the trends and magnitudes of the changes, based in eighth possible directions for ten morphological responsible variables. The Rapel river system was evaluated differently and sampling of sediments characteristics (D50 and armour index), discharge index for both before and after the dam operation, Morphological Quality Index (IQM) and an analysis of aerial photography time series were performed. Results showed that the hydrology indicator impacts for the Aconcagua system were more severe than the impacts on sediments transport (typically the case for diversion type hydropower). A fine armour layer was found within the Rapel river site

  20. Sediment management of run-of-river hydroelectric power project in ...

    Indian Academy of Sciences (India)

    Neena Isaac

    2 Central Water and Power Research Station, Khadakwasla, Pune 411024, India e-mail: ... deposition hydraulically by drawdown flushing is one of the most effective methods for restoring the storage ... hydraulic flushing system, detailed hydraulic model studies ..... important tool during the decision making at all the stages.

  1. 78 FR 45918 - Application for Presidential Permit; Soule River Hydroelectric Project

    Science.gov (United States)

    2013-07-30

    ... accessing the program Web site at http://www.oe.energy.gov/permits_pending.htm , or by emailing Angela Troy at angela.troy@hq.doe.gov . Issued in Washington, DC, on July 24, 2013. Brian Mills, Director...

  2. Project authorization process in the thermal power stations vs in the hydroelectric power stations: two weights, two measurements?

    International Nuclear Information System (INIS)

    Comtois, Y.

    2004-01-01

    Key topics include the long tendering process, a comparison of two projects: thermal station vs. hydroelectrical station, and the solutions towards reducing the delay in obtaining authorization. (author)

  3. A CUSUM analysis of discharge patterns by a hydroelectric dam and discussion of potential effects on the upstream migration of American eel elvers

    International Nuclear Information System (INIS)

    Jessop, B.M.; Harvie, C.J.

    2003-01-01

    American eel elvers are among the diadromous fishes native to the Saint John River in New Brunswick that have been affected by the construction of hydroelectric dams. Before 1980, large numbers of elvers were observed entering the fishway of the Mactaquac Dam in May and June for upstream migration, but their presence abruptly ceased after 1980. A study was conducted to determine why they disappeared at the Mactaquac Dam. A cumulative sum (CUSUM) analysis was performed to determine the variability in magnitude, duration, timing, frequency, and rate of change in the daily and seasonal average level of water discharge associated with the installation of the last two of six turbines in late 1979 and early 1980. It is believed that the rapid, short-term fluctuations in water discharge which is characteristic of peaking hydroelectric dam operations, could seriously affect life cycle transitions of diadromous fishes. Upstream and downstream migration of the elvers may be affected along with their abundance, diversity and productivity. Young fish in particular are at higher risk of mortality during high flows, depending on the species. 40 refs., 3 tabs., 10 figs

  4. Materials Developed from American Indian Culture-Based Curriculum Workshop (Tacoma, Washington, April 25-29, 1977). Book One.

    Science.gov (United States)

    Disney, Dick, Comp.

    Materials presented in this resource guide are the direct result of an American Indian Culture-Based Curriculum Development Workshop. Activities consist of nine flannelboard stories (including The Fire War, How Coyote Made the Columbia River, Legend of the Mayan Moon God); two games (American Indian Games and Indian Picture Symbol Checkerboard);…

  5. The Hydroelectric Business Unit of Ontario Power Generation Inc

    International Nuclear Information System (INIS)

    Gaboury, J.

    2001-01-01

    The focus of this presentation was on the generation and sale of electricity. Prior to deregulation, companies that generated electricity had a readily available customer base to whom the electricity could be sold. The author discussed some of the changes affecting the industry as a result of deregulation of the electricity market in Ontario: the increasing number of companies, as well as the increased number of generators supplying power within the province. Currently 85 per cent of the generation in Ontario is met by Ontario Power Generation (OPG) and this percentage will decrease through de-control. De-control can be achieved in a variety of ways, either through the sale of assets, leases, asset swaps. The market rules dictate that OPG not control in excess of 35 per cent of the generation supply in Ontario, OPG is examining the situation. New supply being constructed or new interconnections with neighboring markets could affect the total assets that would have to be de-controlled. OPG has a mix of generation that includes hydroelectric, fossil, and nuclear, as well as a single wind turbine. Green power, defined as electricity generation deemed less intrusive environmentally than most traditional generation, includes wind, water, landfill gas, solar and others, and could affect the mix of generation. It is expected that there will be a niche market for green power, especially when one considers the reduction in emissions. It could represent a viable option for smaller startup companies, as less capital is required. The options for selling the power, either to the spot market or by entering into a bilateral contract with another customer, were explained

  6. Enlarging the underground hydroelectric plant at Villarino, Spain

    Energy Technology Data Exchange (ETDEWEB)

    Oriard, L.L.

    1997-05-01

    Near the village of Villarino de los Aires, in the province of Salamanca, Spain, was an existing underground hydroelectric power plant. A major enlargement was undertaken to increase the electrical generating capacity, under a contract awarded to a joint venture of Dragados y Construcciones, S. A. (Spain), Entrecanales y Tavora, S. A. (Spain), and S.A. Conrad Zschokke (Switzerland). The enlargement required the excavation of a large and complex underground system of tunnels, shafts and chambers adjacent to existing facilities and interconnected with these facilities. The existing machine hall and transformer chamber were both extended, requiring the blasting of the existing end walls. The drilling, blasting and excavating of the underground system had to be done without damage to existing underground chambers and tunnels, or any of the existing structures, equipment or instrumentation facilities, often within just a few feet of the blasting. This required careful control of vibrations, airblast overpressures and dust. Because the only available non-electric detonating systems were found to be unreliable and unsafe, electric systems would be preferred if they could be used in a safe manner at this site. High electrical potentials existed at the site, and the facilities could not be shut down. Electrical fields were studied carefully, both in the underground environment and above the ground surface. Based on these results, it was concluded that electric detonators could be used if special blasting procedures were developed and followed. In accord with contracting practices of this Spanish agency, the contract was not awarded to the lowest bidder, but to the bidder who demonstrated the best understanding of the project and who presented the best technical proposal for conducting the work to a conclusion that would be satisfactory to the owner. The development of the technical proposal was a two-month effort for a technical group and support staff, prepared in Madrid.

  7. Final Technical Report. Upgrades to Alabama Power Company Hydroelectric Developments

    Energy Technology Data Exchange (ETDEWEB)

    Crew, James F. [Southern Company Generation, Birmingham, AL (United States). Hydro Services; Johnson, Herbie N. [Southern Company Generation, Birmingham, AL (United States). Hydro Services

    2015-03-31

    From 2010 to 2014, Alabama Power Company (“Alabama Power”) performed upgrades on four units at three of the hydropower developments it operates in east-central Alabama under licenses issued by the Federal Energy Regulatory Commission (“FERC”). These three hydropower developments are located on the Coosa River in Coosa, Chilton, and Elmore counties in east-central Alabama.

  8. Proceedings of the 14. workshop of the Committee on River Ice Processes and the Environment : hydraulics of ice covered rivers

    International Nuclear Information System (INIS)

    Morse, B.; Bergeron, N.; Gauthier, Y.

    2007-01-01

    Ice processes play a significant role in the hydrologic regime of Canadian rivers. The Committee on River Ice Processes and the Environment (CRIPE) identifies high-priority topics for research and development and promotes research programs at Canadian colleges and universities. This workshop reviewed the hydraulic aspects of river ice phenomena in an effort to clarify the effects of ice cover on river flow characteristics. Other issues of concern were also discussed, notably ice formation, ice jams, winter operation of hydroelectric power plants, environmental aspects of river ice, and climate change. The workshop featured 12 poster sessions and 40 presentations, of which 5 have been catalogued separately for inclusion in this database. refs., tabs., figs

  9. Comparative Research on River Basin Management in the Sagami River Basin (Japan and the Muda River Basin (Malaysia

    Directory of Open Access Journals (Sweden)

    Lay Mei Sim

    2018-05-01

    Full Text Available In the world, river basins often interwoven into two or more states or prefectures and because of that, disputes over water are common. Nevertheless, not all shared river basins are associated with water conflicts. Rivers in Japan and Malaysia play a significant role in regional economic development. They also play a significant role as water sources for industrial, domestic, agricultural, aquaculture, hydroelectric power generation, and the environment. The research aim is to determine the similarities and differences between the Sagami and Muda River Basins in order to have a better understanding of the governance needed for effectively implementing the lessons drawn from the Sagami River Basin for improving the management of the Muda River Basin in Malaysia. This research adopts qualitative and quantitative approaches. Semi-structured interviews were held with the key stakeholders from both basins and show that Japan has endeavored to present policy efforts to accommodate the innovative approaches in the management of their water resources, including the establishment of a river basin council. In Malaysia, there is little or no stakeholder involvement in the Muda River Basin, and the water resource management is not holistic and is not integrated as it should be. Besides that, there is little or no Integrated Resources Water Management, a pre-requisite for sustainable water resources. The results from this comparative study concluded that full support and participation from public stakeholders (meaning the non-government and non-private sector stakeholders is vital for achieving sustainable water use in the Muda River Basin. Integrated Water Resources Management (IWRM approaches such as the introduction of payments for ecosystems services and the development of river basin organization in the Muda River Basin should take place in the spirit of political willingness.

  10. Cumulative impacts of hydroelectric development on the fresh water balance in Hudson Bay

    International Nuclear Information System (INIS)

    Anctil, F.; Couture, R.

    1994-01-01

    A study is presented of the impacts of hydroelectric development on the surface water layer of Hudson Bay, including James Bay and the Foxe Basin. These impacts are directly related to the modifications in the fresh water balance of Hudson Bay and originate from the management of hydroelectric complexes. The fresh water balance is determined by identifying, at different scales, the modifications caused by each complex. The main inputs are the freezing and thawing of the ice cover, runoff water, and mass exchange at the air-water interface. Three spatial scales were used to obtain the resolution required to document the cumulative effects of fresh water balance modifications on the water surface layer, one each for Hudson Bay, Hudson Strait, and the Labrador Sea. Finally, the addition of the proposed Great Whale hydroelectric complex is examined from the available information and forecasts. 18 refs,. 6 figs., 1 tab

  11. The determinants of cost efficiency of hydroelectric generating plants: A random frontier approach

    International Nuclear Information System (INIS)

    Barros, Carlos P.; Peypoch, Nicolas

    2007-01-01

    This paper analyses the technical efficiency in the hydroelectric generating plants of a main Portuguese electricity enterprise EDP (Electricity of Portugal) between 1994 and 2004, investigating the role played by increase in competition and regulation. A random cost frontier method is adopted. A translog frontier model is used and the maximum likelihood estimation technique is employed to estimate the empirical model. We estimate the efficiency scores and decompose the exogenous variables into homogeneous and heterogeneous. It is concluded that production and capacity are heterogeneous, signifying that the hydroelectric generating plants are very distinct and therefore any energy policy should take into account this heterogeneity. It is also concluded that competition, rather than regulation, plays the key role in increasing hydroelectric plant efficiency

  12. Expanding the functional significance of automated control systems for the production process at hydroelectric plants

    International Nuclear Information System (INIS)

    Vasil'ev, Yu.S.; Kononova, M.Yu.

    1993-01-01

    Automated control systems for the production process (ACS PP) have been successfully implemented in a number of hydroelectric plants in the Russian Federation. The circle of problems that can be solved using ACS PP can be conditionally divided into two classes: on-line/technological control, and production-technological control. This article describes successes and future directions for the solution of these two classes of problems. From the discussion, it is concluded (1) that the data base for existing ACS PP at hydroelectric plants can be successfully employed as points for monitoring the conservation of an environment of local significance; (2) that is is expedient to discuss the problem with organizations, including local control groups interested in the development of territorial-basin systems for ecological monitoring; and (3) that the initiative in creating local territorial-basin support points for monitoring should emanate from guidelines for hydroelectric plants with ACS PP. 3 refs., 2 figs

  13. Documentation of input datasets for the soil-water balance groundwater recharge model of the Upper Colorado River Basin

    Science.gov (United States)

    Tillman, Fred D.

    2015-01-01

    The Colorado River and its tributaries supply water to more than 35 million people in the United States and 3 million people in Mexico, irrigating more than 4.5 million acres of farmland, and generating about 12 billion kilowatt hours of hydroelectric power annually. The Upper Colorado River Basin, encompassing more than 110,000 square miles (mi2), contains the headwaters of the Colorado River (also known as the River) and is an important source of snowmelt runoff to the River. Groundwater discharge also is an important source of water in the River and its tributaries, with estimates ranging from 21 to 58 percent of streamflow in the upper basin. Planning for the sustainable management of the Colorado River in future climates requires an understanding of the Upper Colorado River Basin groundwater system. This report documents input datasets for a Soil-Water Balance groundwater recharge model that was developed for the Upper Colorado River Basin.

  14. Revolutionising landscapes: Hydroelectricity and the heavy industrialisation of society and environment in the Comte de Beauharnois, 1927--1948

    Science.gov (United States)

    Pelletier, Louis-Raphael

    This dissertation analyses the rapid industrialisation of the rural Comte de Beauharnois and the adjacent stretch of the Fleuve Saint-Laurent owing to the construction, between 1929 and 1948, of a gigantic canal for hydroelectricity production and navigation by an electricity corporation called the Beauharnois Light Heat and Power (BLH&P). Using principally the archives of the BLH&P---especially its complaints files and its rich photographic record---this thesis argues that this process exemplifies the finance capitalist reorganisation of the society and ecosystems of the Canadian province of Quebec from the 19th century to the Great Depression. In keeping with recent work in environmental history, the transformation of rural landscapes and a river for heavy industry is described as an important dimension of a revolution in modes of production. More specifically, I argue that, in the case under study, the finance-capitalist reorganisation of Quebec revolved around two central and explicit projects, one social and the other environmental: the grouping of most individuals in an industrial working class without control over the means of production and the reorganisation of rural landscapes into reservoirs of modern energy and industrial natural resources.

  15. THE DYNAMIC OF USING THE RIVERS ENERGY FROM REPUBLIC OF MOLDOVA TERRITORY

    Directory of Open Access Journals (Sweden)

    DIANA BRAGA

    2011-03-01

    Full Text Available The dynamic of using the rivers energy from Republic of Moldova territory. One of the least explored and tapped energy sources in Moldova are the inland rivers. Considering the critical condition of the country regarding energy sources, it would be highly necessary to study the feasibility of hydraulic energy reserves. Although Moldova has no major rivers with a large flow of water, the network of small tributaries of its two large rivers, Dniester and Prut, could be used to a certain extent for partial power supply to villages situated along inland watercourses.The first scientific developments concerning the hydropower potential of the rivers in Bessarabia belong to professor D. Pavel. Around 1933 he was suggesting a series of hydro-technical facilities on Prut and Dniester rivers and their tributaries. Subsequently, in the ‘40s of the 20th century the first power plants were built on small rivers. After World War II some small hydropower plants, built during the interwar period, had been restored and some other put into operation. These include the plant at Dubăsari with a capacity of 48 MW that started operating in 1954 on Dniester River, and the hydroelectric complex at Costeşti -Stânca with a capacity of 16 MW, in 1978 on the River Prut. Nevertheless, the leverage of hydroelectric resources is not significant, only 23 being used nowadays, which is 7% of the hydropower potential - a rather modest number compared to other states.

  16. The performance study of a small hydroelectric power system

    International Nuclear Information System (INIS)

    Al-Jumaily, Khalil E. J.; Tawfi, Sinan Samir

    2006-01-01

    A small hydroelectric power system of an undershot waterwheel was designed, constructed and experimented in the hydraulic channel which has a sluice gate as a small dam. The constructed waterwheel diameter could be changed from 0.4 m to 0.6 m at interval steps of 0.04 m. The number of blades of the constructed waterwheel could be changed from 9 to 12 to 18 and to 36 blades. By increasing the water mass flow rate from 0.341 to 1.765 kg/s at channel cross sectional area (12.75 cm 2 ), the undershot waterwheel generated power which increased to 0.201 Watt, the mechanical efficiency increased to more than 10.8%, and the electrical efficiency increased to more than 80.6%. But the channel efficiency was decreased to 10.9%. while the volumetric efficiency was fixed at 72.9%. The waterwheel efficiency 17.25 m 2 at fixed water mass flow rate (1.765kg/s), the undershot waterwheel generated power system decreased in the following. The generator output power from 0.201 to 0.067 Watt, the mechanical efficiency reduced to 26.7% and the electrical efficiency reduced 94.4% and increased the channel efficiency from 8.6% to 100%, the volumetric efficiency from 70.9% to 75.5%, and the waterwheel efficiency from 85.7%( to 91.3%. The transitional efficiency was fixed at 97.9%. The maximum overall efficiency of the small generated power system was 6.69% at the water head 15.45 cm. The output power was 0.18 Watt. these values obtained when the number of blades 36, number of revolutions per minute 57 rpm, waterwheel diameter 0.44 m, water mass flow rate 1.765 kg/s, and channel cross sectional area 12.75 cm 2 . The theoretical extrapolation of the waterwheel diameter to 2 m with water head of 5 m gives an output generated power of 675 Watt.(Author)

  17. 75 FR 62531 - Alabama Power Company; Project No. 349-150-Alabama Martin Dam Hydroelectric Project; Notice of...

    Science.gov (United States)

    2010-10-12

    ... DEPARTMENT OF ENERGY Federal Energy Regulatory Commission Alabama Power Company; Project No. 349-150--Alabama Martin Dam Hydroelectric Project; Notice of Proposed Restricted Service List for a... the Martin Dam Hydroelectric Project. The Programmatic Agreement, when executed by the Commission, the...

  18. 77 FR 12280 - FFP Missouri 17, LLC BOST2 Hydroelectric, LLC; Notice Announcing Filing Priority for Preliminary...

    Science.gov (United States)

    2012-02-29

    ... DEPARTMENT OF ENERGY Federal Energy Regulatory Commission [Project Nos. 13824-000, 13826-000] FFP Missouri 17, LLC BOST2 Hydroelectric, LLC; Notice Announcing Filing Priority for Preliminary Permit... Hydroelectric, LLC, Project No. 13826-000. 2. FFP Missouri 17, LLC, Project No. 13824-000. Dated: February 22...

  19. 33 CFR Appendix - List of FPC Standard Articles Forms Used in Permits and Licenses for Hydroelectric Projects

    Science.gov (United States)

    2010-07-01

    ... 33 Navigation and Navigable Waters 3 2010-07-01 2010-07-01 false List of FPC Standard Articles Forms Used in Permits and Licenses for Hydroelectric Projects Navigation and Navigable Waters CORPS OF... Forms Used in Permits and Licenses for Hydroelectric Projects The following FPC standard articles Forms...

  20. Least cost addition of power from hydroelectrical developments: Maximizing existing assets

    Energy Technology Data Exchange (ETDEWEB)

    Felix, Lafontant; Briand, Marie-Helene; Veilleux, Rheaume

    2010-09-15

    Hydroelectric developments built in the early 1900's are nearing their useful lifespan and require significant rehabilitation in order to meet modern safety and performance criteria. Also, global increasing energy costs represent a strong incentive for operators to find low-cost, environment-friendly solutions while increasing energy generation at existing facilities. Projects promoting innovative ways of recycling existing developments are great examples of sustainable development and represent win-win solutions for population and hydropower industry alike. The proposed presentation describes successful projects consisting in the rehabilitation or addition of power to existing hydroelectric. These recycling projects are very attractive from both economic and environmental.

  1. The business for power : hydro-electricity in southeastern British Columbia 1897-1997

    International Nuclear Information System (INIS)

    Mouat, J.

    1997-01-01

    The evolution and development of the hydroelectric power industry in southeastern British Columbia was chronicled by recounting the first hundred years of the West Kootenay Power and Light Electrical Utility. The utility's first generator produced electricity in the summer of 1898 when hydro-electric companies were a new phenomenon. The factors behind the success of the company, the personalities of the promoters and entrepreneurs that launched the company, the complex interplay of unique events and the social and political context that illustrate a fascinating process in which electricity became an integral part of everyday life, are described. Refs., tabs., figs

  2. Hydroelectric power: Energy vector for progress and development; Wasserkraft: Energievektor fuer Fortschritt und Entwicklung

    Energy Technology Data Exchange (ETDEWEB)

    Meclot, B; Dupuy, M; Weis, H; Linari, A; Baril, M; Barlow, M; Cambi, M; Cullen, R; Genier, M; Germeau, J P; Madureira, C; Mellquist, P; Perea, A; Rost, M; Savey, P; Schiller, G; Talhull, A

    1997-11-01

    Hydroelectric power in the UNIPEDE member states has a share of about 18 percent, i.e. slightly less than the world average of 19 percent. Hydroelectric power has good future prospects: It is a renewable energy source and well suited for storage. (orig) [Deutsch] Wasserkraft ist eine Energie, die im Rahmen der von den Mitgliedslaendern der UNIPEDE genutzten Energieerzeugungsarten eine hohe Bedeutung hat. Sie repraesentiert durchschnittlich 18% der erzeugten elektrischen Energie, leicht unterhalb des weltweiten Durchschnitts (19%). Die Merkmale der Wasserkraft verdienen Aufmerksamkeit: Es handelt sich um eine erneuerbare Energie, die in grossen Mengen gespeichert werden kann und in der Energiewirtschaft eine grosse Rolle spielt. (orig.)

  3. EDM - A model for optimising the short-term power operation of a complex hydroelectric network

    International Nuclear Information System (INIS)

    Tremblay, M.; Guillaud, C.

    1996-01-01

    In order to optimize the short-term power operation of a complex hydroelectric network, a new model called EDM was added to PROSPER, a water management analysis system developed by SNC-Lavalin. PROSPER is now divided into three parts: an optimization model (DDDP), a simulation model (ESOLIN), and an economic dispatch model (EDM) for the short-term operation. The operation of the KSEB hydroelectric system (located in southern India) with PROSPER was described. The long-term analysis with monthly time steps is assisted by the DDDP, and the daily analysis with hourly or half-hourly time steps is performed with the EDM model. 3 figs

  4. Impact of PETIT-SAUT hydroelectric dam on aquatic life (French Guyana)

    International Nuclear Information System (INIS)

    Sissakian, C.

    1992-01-01

    The construction of the hydroelectric scheme of PETIT-SAUT in French Guyana creates a reservoir which covers 310 km 2 of tropical rain forest. This hydroelectric scheme has an influence on the various aspects of the environment. One of the most important aspects is the modification of the water quality and of the aquatic life due to the degradation of organic matter. Some studies of the biology of these area fishes are initiated. At the same time, Electricite de France studies some constructive arrangements and reservoir managements to assure, the most rapidly possible, a return to an aquatic normal life. 6 refs

  5. Report on the development perspectives of the hydroelectric production in France

    International Nuclear Information System (INIS)

    2006-03-01

    This report, presented to the Ministry of the Economy, the Finances and the Industry, has been realized by the high ranking of the sustainable development of the Ministry. It presents the synthesis of the working group study at the second half year 2005 and proposes to the Ministry some practical actions to develop the hydroelectric production in France. After a presentation of the hydro electric-power challenges and potential, the author discusses the regulatory context of the hydroelectric power development, the conditions of this development and proposes some actions. (A.L.B.)

  6. Turning to account the implicit side effects of hydroelectric projects implying reservoirs

    International Nuclear Information System (INIS)

    Ionescu, S.

    1996-01-01

    Operation of the hydroelectric projects including relatively important water reservoirs provides implicitly side effects favorable to water management (increase of minimum provided flows, flood routing, etc) and to related fields (additional facilities for water supply, extension of the public utility networks as: road, telecommunication, electric lines, favoring the tourism and recreative activities). The paper suggests methodologies for economic and financial assessment of these effects, the turning to account of which, may increase the efficiency of the hydroelectric development and may stimulate the interest for new investments in the field.(author). 3 figs., 5 refs

  7. Evaluation of the Life Cycle Greenhouse Gas Emissions from Hydroelectricity Generation Systems

    Directory of Open Access Journals (Sweden)

    Akhil Kadiyala

    2016-06-01

    Full Text Available This study evaluated the life cycle greenhouse gas (GHG emissions from different hydroelectricity generation systems by first performing a comprehensive review of the hydroelectricity generation system life cycle assessment (LCA studies and then subsequent computation of statistical metrics to quantify the life cycle GHG emissions (expressed in grams of carbon dioxide equivalent per kilowatt hour, gCO2e/kWh. A categorization index (with unique category codes, formatted as “facility type-electric power generation capacity” was developed and used in this study to evaluate the life cycle GHG emissions from the reviewed hydroelectricity generation systems. The unique category codes were labeled by integrating the names of the two hydro power sub-classifications, i.e., the facility type (impoundment (I, diversion (D, pumped storage (PS, miscellaneous hydropower works (MHPW and the electric power generation capacity (micro (µ, small (S, large (L. The characterized hydroelectricity generation systems were statistically evaluated to determine the reduction in corresponding life cycle GHG emissions. A total of eight unique categorization codes (I-S, I-L, D-µ, D-S, D-L, PS-L, MHPW-µ, MHPW-S were designated to the 19 hydroelectricity generation LCA studies (representing 178 hydropower cases using the proposed categorization index. The mean life cycle GHG emissions resulting from the use of I-S (N = 24, I-L (N = 8, D-µ (N = 3, D-S (N = 133, D-L (N = 3, PS-L (N = 3, MHPW-µ (N = 3, and MHPW-S (N = 1 hydroelectricity generation systems are 21.05 gCO2e/kWh, 40.63 gCO2e/kWh, 47.82 gCO2e/kWh, 27.18 gCO2e/kWh, 3.45 gCO2e/kWh, 256.63 gCO2e/kWh, 19.73 gCO2e/kWh, and 2.78 gCO2e/kWh, respectively. D-L hydroelectricity generation systems produced the minimum life cycle GHGs (considering the hydroelectricity generation system categories with a representation of at least two cases.

  8. River engineering

    NARCIS (Netherlands)

    De Vries, M.

    1993-01-01

    One dimension models - basic eauations, analytical models, numberical models. One dimensional models -suspended load, roughness and resistance of river beds. Solving river problems - tools, flood mitigation, bank protection.

  9. Behind an ambitious megaproject in Asia: The history and implications of the Bakun hydroelectric dam in Borneo

    International Nuclear Information System (INIS)

    Sovacool, Benjamin K.; Bulan, L.C.

    2011-01-01

    Using a case-study, inductive, narrative approach, this article explores the history, drivers, benefits, and barriers to the Bakun Hydroelectric Project in East Malaysia. Situated on the island of Borneo, Bakun Dam is a 204 m high concrete face, rock filled dam on the Balui River in the Upper Rajang Basin in the rainforests of Sarawak. Bakun Dam and its affiliated infrastructure could be the single largest and most expensive energy project ever undertaken in Southeast Asia. Based on data collected through site visits, original field research in Sarawak, and more than 80 research interviews, the article begins by teasing out the complex history and drivers behind the Bakun project before identifying a set of potential social, political, and economic benefits the project could deliver. It then delves into six sets of barriers in the technical, economic, political, legal and regulatory, social, and environmental realms. We find that Bakun illustrates how centralized energy megaprojects, while ostensibly championed for reasons of economies of scale and the ability to bring about transformational change in the shortest period of time, often fail to address broader development goals such as fighting energy poverty and improving the livelihoods of the local communities they are supposed to serve. - Highlights: → Bakun Dam is concrete face, rock filled dam on the Balui River in the Upper Rajang Basin in the rainforests of Sarawak. → The project faces technical, economic, political, legal and regulatory, social, and environmental barriers. → We conclude the project will fail to fight energy poverty or improve the livelihoods of local populations.

  10. Rethinking the influence of hydroelectric development on gene flow in a long-lived fish, the Lake Sturgeon Acipenser fulvescens.

    Directory of Open Access Journals (Sweden)

    Craig A McDougall

    Full Text Available Many hydroelectric dams have been in place for 50 - >100 years, which for most fish species means that enough generations have passed for fragmentation induced divergence to have accumulated. However, for long-lived species such as Lake Sturgeon, Acipenser fulvescens, it should be possible to discriminate between historical population structuring and contemporary gene flow and improve the broader understanding of anthropogenic influence. On the Winnipeg River, Manitoba, two hypotheses were tested: 1 Measureable quantities of former reservoir dwelling Lake Sturgeon now reside downstream of the Slave Falls Generating Station, and 2 genetically differentiated populations of Lake Sturgeon occur upstream and downstream, a result of historical structuring. Genetic methods based on ten microsatellite markers were employed, and simulations were conducted to provide context. With regards to contemporary upstream to downstream contributions, the inclusion of length-at-age data proved informative. Both pairwise relatedness and Bayesian clustering analysis substantiated that fast-growing outliers, apparently entrained after residing in the upstream reservoir for several years, accounted for ~15% of the Lake Sturgeon 525-750 mm fork length captured downstream. With regards to historical structuring, upstream and downstream populations were found to be differentiated (FST = 0.011, and 0.013-0.014 when fast-growing outliers were excluded, and heterozygosity metrics were higher for downstream versus upstream juveniles. Historical asymmetric (downstream gene flow in the vicinity of the generating station was the most logical explanation for the observed genetic structuring. In this section of the Winnipeg River, construction of a major dam does not appear to have fragmented a previously panmictic Lake Sturgeon population, but alterations to habitat may be influencing upstream to downstream contributions in unexpected ways.

  11. Assessment of spermatogenesis and plasma sex steroids in a seasonal breeding teleost: a comparative study in an area of influence of a tributary, downstream from a hydroelectric power dam, Brazil.

    Science.gov (United States)

    Domingos, Fabricio F T; Thomé, Ralph G; Arantes, Fabio P; Castro, Antonio Carlos S; Sato, Yoshimi; Bazzoli, Nilo; Rizzo, Elizete

    2012-12-01

    River damming and building of hydroelectric power plants interrupt the reproductive migration routes and change the major physicochemical parameters of water quality, with drastic consequences for populations of migratory fishes. The goal of this study was to evaluate proliferation and cell death during spermatogenesis and serum profiles of sex steroids in Prochilodus argenteus, from the São Francisco River, downstream from the Três Marias Dam. A total of 257 adult males were caught quarterly during a reproductive cycle in two sites: the first 34 km of the river after the dam (site 1) and the second 34-54 km after the dam (site 2), after the confluence with a tributary, the Abaeté River. Seasonal changes in the testicular activity associated with morphometric analyses of germ cells as well as proliferation and testicular apoptosis support a more active spermatogenesis in fish from site 2, where higher levels of sex steroids and gonadosomatic index (GSI) were also found. In site 1, fish presented low serum levels of testosterone, 17β-estradiol and 17α-hydroxyprogesterone and a low GSI during gonadal maturation. Spermatogonial proliferation (PCNA) and apoptosis (TUNEL) were more elevated in fish from site 1, but spermatocytes were mainly labelled in fish from site 2. Overall, these data demonstrate changes in testicular activity and plasma sex steroids in a neotropical teleost fish living downstream from a hydroelectric dam, supplying new data on fish reproduction in regulated rivers. Moreover, morphometric analyses associated with sex steroids profiles provide reliable tools to assess fish spermatogenesis under environmental stress conditions.

  12. Association of American Indian cultural identity with physical activity.

    Science.gov (United States)

    Duncan, Glen E; McDougall, Casey L; Dansie, Elizabeth; Garroutte, Eva; Buchwald, Dedra; Henderson, Jeffrey A

    2014-01-01

    Cultural factors are associated with health behaviors among American Indians. Accordingly, the objective of our study was to investigate whether cultural identity, defined as the primary language spoken at home, is associated with: 1) higher total physical activity levels, and 2) levels of leisure-time physical activity recommended for health benefits in a diverse sample of American Indians. Cross-sectional analysis of 5,207 American Indian adults 18 to 82 years. Participants resided on the Oglala Sioux (n=2,025) and Cheyenne River Sioux (n=1,528) reservations in South Dakota, and the Gila River Indian Community (n=1,654) in Arizona. Bicultural participants in South Dakota, but not Arizona, reported significantly higher total physical activity compared to the English-only group (Pcultures with which they identify are recommended.

  13. Small-scale hydro-electric scheme in Roches, Switzerland

    International Nuclear Information System (INIS)

    Hausmann, M.

    2006-01-01

    The small hydropower plant (SHPP) project 'PCH Roches' is planned to be built in Roches, a small village located in the Jura region of the canton of Bern. The goal of this undertaking is to reactivate a site with hydro potential of the river Birs on a section that was already well exploited by some ancient SHPP (since 1953 or probably even earlier). Several modifications were performed on this plant over the years; not all contributed positively on its production figures. Following a transfer of the water rights in 1987, claims became loud against the owner to perform maintenance on the river banks and to modify the weir such that a free passage for the fishes will be granted. Those issues contributed to inflate a conflict which ended in the repeal of the water rights and a total plant shut down in 2001. The new project plans to reuse the existing pen stock and to carry out some refurbishing activities to grant security and better performance. The weir and the intake structure are also redesigned such that the water storage can be somewhat raised for normal operation; a weir gate will however allow to better discharge the river in flood situations. A new turbine house will be erected at the current location where the tail water pen stock rejoins the river. Hence, the existing old turbine house will be obsolete and the upper and lower pen stock sections are to be linked with each other. Limited by the existing pen stock size, the new plant is expected to produce some 50 kW power and 362,000 kWh/year. This represents an increase in energy generation of around 200% compared with the ancient SHPP. Gross head is 5.38 m, net head 4.12 m with a turbine flow of at least 1.6 m 3 /s. The expected energy sales price applicable to this project reaches about 0.17 CHF/kWh as per the current tariffs set by the grid owner. This project calls for the building of a state-of-the-art SHPP. It will avoid the total dismantling of the existing works to take place and allow the small

  14. 76 FR 18747 - Teton Power Funding, LLC; Topsham Hydro Partners Limited Partnership; Topsham Hydroelectric...

    Science.gov (United States)

    2011-04-05

    ... DEPARTMENT OF ENERGY Federal Energy Regulatory Commission [Project No. 4784-081] Teton Power Funding, LLC; Topsham Hydro Partners Limited Partnership; Topsham Hydroelectric Generating Facility Trust No. 1; Brown Bear Power, LLC; Notice of Application for Partial Transfer of License, and Soliciting...

  15. Analysis of synchronous and induction generators used at hydroelectric power plant

    Science.gov (United States)

    Diniş, C. M.; Popa, G. N.; lagăr, A.

    2017-01-01

    In this paper is presented an analysis of the operating electric generators (synchronous and induction) within a small capacity hydroelectric power plant. Such is treated the problem of monitoring and control hydropower plant using SCADA systems. Have been carried an experimental measurements in small hydropower plant for different levels of water in the lake and various settings of the operating parameters.

  16. 76 FR 12101 - Jordan Hydroelectric Limited Partnership; Notice of Environmental Assessment

    Science.gov (United States)

    2011-03-04

    ... DEPARTMENT OF ENERGY Federal Energy Regulatory Commission [ Project No. 12737-002] Jordan Hydroelectric Limited Partnership; Notice of Environmental Assessment In accordance with the National Environmental Policy Act of 1969 and the Federal Energy Regulatory Commission's regulations, 18 CFR part 380 (Order No. 486, 52 FR 447897), the Office of...

  17. 76 FR 15971 - Eagle Mountain Pumped Storage Hydroelectric Project; Eagle Crest Energy; Notice of Teleconference

    Science.gov (United States)

    2011-03-22

    ... DEPARTMENT OF ENERGY Federal Energy Regulatory Commission [P-13123-002-CA] Eagle Mountain Pumped Storage Hydroelectric Project; Eagle Crest Energy; Notice of Teleconference a. Date and Time of Meeting: Friday, April 15, 2011 at 9 a.m. (Pacific Time). b. Place: By copy of this notice we are inviting all...

  18. 76 FR 22699 - Eagle Mountain Pumped Storage Hydroelectric Project, Eagle Crest Energy; Notice of Teleconference

    Science.gov (United States)

    2011-04-22

    ... DEPARTMENT OF ENERGY Federal Energy Regulatory Commission [P-13123-002--CA] Eagle Mountain Pumped Storage Hydroelectric Project, Eagle Crest Energy; Notice of Teleconference a. Date and Time of Meeting: Friday, May 6, 2011 at 1 p.m. (Pacific Time). b. Place: By copy of this notice we are inviting all...

  19. Constraints of micro hydroelectric power plants in the west region of ...

    African Journals Online (AJOL)

    The objective of the present work is to study the constraints of Micro Hydroelectric Power Plants (MHPPs) installed in the West Region of Cameroon. The study was carried out between January 2005 and December 2008 and is related to water conveyance structures, production facilities; transportation and distribution ...

  20. To Construction of Expendable Hydroelectric Power Station Characteristics and Their Timely Correction

    Directory of Open Access Journals (Sweden)

    V. Kh. Nasibov

    2006-01-01

    Full Text Available The paper provides a technique of analytical construction of expendable characteristics and characteristics of a relative gain of water charge at a hydroelectric power station. Planning method and regression analysis have been applied for the construction of these characteristics.