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

Description: 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 leve… more
Date: October 1, 1980
Creator: Hildebrand, S.G. (ed.)
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Water Science and Technology Board. Annual report 1992-1993

Description: This report summarizes the activities of the Water Science and Technology Board during 1992. The WSTB is intended to be a dynamic forum, a mechanism by which the broad community of water science, technology, and policy professionals can help assure high-quality national water programs. The principal products of WSTB studies are written reports which cover a wide range of water resources issues of current national concern. A few recent examples are: Managing wastewater in coastal urban areas; Gr… more
Date: January 1, 1995
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Tritium in the aquatic environment

Description: Tritium is of environmental importance because it is released from nuclear facilities in relatively large quantities and because it has a half life of 12.26 y. Most of the tritium released into the atmosphere eventually reaches the aqueous environment, where it is rapidly taken up by aquatic organisms. This paper reviews the current literature on tritium in the aquatic environment. Conclusions from the review, which covered studies of algae, aquatic macrophytes, invertebrates, fish, and the foo… more
Date: February 1, 1986
Creator: Blaylock, B.G.; Hoffman, F.O. & Frank, M.L.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Plutonium - its behavior in natural-water systems and assimilation by man

Description: There are a number of factors which must be considered in establishing whether or not the inadvertent intrusion of a sizable amount of plutonium-bearing material into a natural-water system may have a significant impact on the health of those individuals who use that system as a drinking-water resource. These factors include the chemical form(s) and solubility of plutonium in natural waters, its behavior in relation to natural processes (geochemical and biological), its fate in water-treatment … more
Date: January 1, 1981
Creator: Larsen, R.P.; Nelson, D.M.; Bhattacharyya, M.H. & Oldham, R.D.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Environmental Sciences Division. Annual progress report for period ending September 30, 1980. [Lead abstract]

Description: Research conducted in the Environmental Sciences Division for the Fiscal Year 1980 included studies carried out in the following Division programs and sections: (1) Advanced Fossil Energy Program, (2) Nuclear Program, (3) Environmental Impact Program, (4) Ecosystem Studies Program, (5) Low-Level Waste Research and Development Program, (6) National Low-Level Waste Program, (7) Aquatic Ecology Section, (8) Environmental Resources Section, (9) Earth Sciences Section, and (10) Terrestrial Ecology S… more
Date: March 1, 1981
Creator: Auerbach, S.I. & Reichle, D.E.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Geothermal Aquatic Ecosystem Program: Geyser-Calistoga KGRA. Interim report

Description: The formulation of a study plan for assessing the impact of geothermal development in the Geysers-Calistoga KGRA upon the local aquatic ecosystem is described briefly. A program for chemically characterizing the various partitions of the streambed sediment is described. Current activities and cooperative efforts are mentioned. (MHR)
Date: October 12, 1979
Creator: Ireland, R.R.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Behavior of ultrasonic tagged chinook salmon and steelhead trout migrating past Hanford thermal discharges (1967)

Description: Ultrasonic tagged, adult chinook salmon and steelhead trout were tracked in the Columbia River in 1967 during upstream migration past cooling water discharges from nuclear reactors. All fish migrated near shorelines, showing preference for the river bank opposite reactors. Clear responses to local temperaature differences were exhibited by few fish, these responses being to small shoreline seepages rather than to main centerchannel outfalls. (auth)
Date: July 1, 1973
Creator: Coutant, C.C.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Research/Evaluate Restoration of NE Oregon Streams: Effects of Livestock Exclosures (Corridor Fencing) on Riparian Vegetation, Stream Geomorphic Features and Fish Populations; Final Report 2002.

Description: The Pacific Northwest Electric Power Planning and Conservation Act of 1980 indicated ''The council shall properly develop and adopt a program to protect, mitigate, and enhance fish and wildlife, including related spawning grounds and habitat on the Columbia River and its tributaries.'' As a result, the Bonneville Power Administration (BPA) has spent millions of dollars on various instream projects throughout the Columbia Basin with the goal of increasing system-wide production of anadromous fis… more
Date: September 17, 2002
Creator: Kauffman, J. Boone
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Kootenai River Biological Baseline Status Report : Annual Report, 1996.

Description: The Kootenai River ecosystem in Idaho, Montana and British Columbia (B.C.) Canada has been severely degraded during the past 50 years. This aquatic ecosystem has changed from one that was culturally eutrophic, to one that is oligotrophic due to channelization, diking, impoundment (construction and operation of Libby Dam), and pollution abatement measures in the watershed. As a result of these influences, flow regimes, temperature patterns, and water quality were altered, resulting in changes in… more
Date: February 1, 1997
Creator: Richards, Diana
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Reservoir vital signs monitoring, 1992: Bacteriological conditions in the Tennessee Valley. Fourth annual report

Description: Twenty-eight designated swimming beaches, four informal swimming areas, two canoe launching or landing sites, and two additional sites on a canoeing stream were sampled at least ten times each during 30-day sampling periods in the summer of 1992. One designated swimming beach, one informal swimming area, and two canoe launching or landing sites exceeded the recommended criterion of geometric mean concentrations of fecal coliform bacteria of 200/100 mL. In addition to these four sites, five desi… more
Date: May 1, 1993
Creator: Fehring, J. P.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Description and Assessment of the Raft River Lotic System in the Vicinity of the Raft River Geothermal Area. Annual Report

Description: The Raft River is the only perennial lotic system within this area and one concern has been the impact a spill of geothermal water would have on the biota of the stream. Identification of the structure of these communities is the baseline information which was the objective of this study. The results of the inventory in terms of potential recovery of downstream communities from the impact of geothermal water induced perturbations are discussed.
Date: December 1, 1979
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Ecological distribution of Legionella pneumophila

Description: Bacteria were concentrated 500-fold from 20-liter water samples collected from 67 different lakes and rivers in the United States. The data suggest that Legionella pneumophila is part of the natural aquatic environment, and that the bacterium is capable of surviving extreme ranges of environmental conditions. The data further demonstrate the effectiveness of the direct fluorescent antibody technique for detecting L. pneumophila in natural aquatic systems. Smears of the concentrated samples were… more
Date: January 1, 1980
Creator: Fliermans, C. B.; Cherry, W. B.; Orrison, L. H.; Smith, S. J.; Tison, D. L. & Pope, D. H.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Water Science and Technology Board. Annual report 1991

Description: This report summarizes the activities of the Water Science and Technology Board during 1991. The WSTB is intended to be a dynamic forum, a mechanism by which the broad community of water science, technology, and policy professionals can help assure high-quality national water programs. The principal products of WSTB studies are written reports which cover a wide range of water resources issues of current national concern. A few recent examples are: Restoration of aquatic ecosystems - science, t… more
Date: January 1, 1995
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Hydrologic analysis of Steel Creek and L Lake and the effects of flow reduction on Steel Creek habitat

Description: This report was prepared to support a proposal to eliminate the EIS mandated spring flow requirements in Steel Creek below L Lake. The base flow in Steel Creek below L Lake was estimated using historical data. The water balance of L Lake was studied to evaluate the effects of flow reduction on the Steel Creek hydrologic system. The base flow in Steel Creek below L Lake is estimated as 0.28 cms (10 cfs). A reduction in L Lake discharge to 0.28 cms will result in a fish community similar to the o… more
Date: December 31, 1993
Creator: del Carmen, B. R. & Paller, M. H.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Carbon and nitrogen isotope studies in an arctic aquatic ecosystem

Description: The Phase II studies of the R4D Program on stream and watershed ecology reflect the accomplishments and accumulation of baseline information obtained during the past studies. Although our rough estimates indicate that nitrogen inputs to the watershed ba lance losses, the carbon fluxes suggest that they are not in equilibrium and that there is a net loss of carbon from the tundra ecosystem through respiration and transport out of the watershed via the stream system. Radiocarbon profiles of soil … more
Date: December 31, 1989
Creator: Schell, D. M.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Umatilla River Basin Anadromous Fish Habitat Enhancement Project: 1995 Annual Report.

Description: During the 1995 - 96 project period, four new habitat enhancement projects were implemented under the Umatilla River Basin Anadromous Fish Habitat Enhancement Project by the Confederated Tribes of the Umatilla Indian Reservation (CTUIR) in the upper Umatilla River Basin. A total of 38,644 feet of high tensile smooth wire fencing was constructed along 3.6 miles of riparian corridor in the Meacham Creek, Wildhorse Creek, Greasewood Creek, West Fork of Greasewood Creek and Mission Creek watersheds… more
Date: May 1, 1996
Creator: Shaw, R.Todd
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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USDOE study: Human health and ecological risk assessment for produced water discharges

Description: Produced water generated during the production of oil and gas can contain high concentrations of radionuclides, organics and heavy metals. There are concerns about potential human health and ecological impacts from the discharge of these contaminants to the Gulf of Mexico. Data collected in the United States Department of Energy (USDOE) field study are being used in a series of human health and ecological risk assessments. These assessments will support scientifically-based regulation and risk … more
Date: December 31, 1994
Creator: Meinhold, A.F.; Holtzman, S.; DePhillips, M. & Hamilton, L.D.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Inexpensive Weir and Proportional Sampler for Miniature Watershed Ecosystems

Description: A weir system with proportional sampler for use on miniature water-shed ecosystems is described. Eight weir collection systems were evaluated for their ability to measure and sample the inputs and outputs of soil-island ecosystems which occur on granite outcrops. The proportion of water actually collected by the weir systems was generally less than the proportion the systems were designed to sample, but adequate for supplying data needed for estimating elemental budgets. The weir systems were n… more
Date: July 1, 1979
Creator: Nabholz, J. Vincent; Crossley, D. A., Jr. & Best, G. Ronnie
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Definitive evaluation of Wheeler Reservoir sedments toxicity using juvenile freshwater mussels (Andodonta imbecillis Say)

Description: Reservoir sediments near the Decatur, Alabama, industrial waterfront were screened for acute (9-day) toxicity to 8-day old freshwater mussels In 1990. only two locations, designated as stations Alpha (TRM 303.4L, Dry Branch Embayment) and Delta (TRM 301.lL), were found to be toxic to mussels. Toxicity correlated strongly with unionized ammonia measured daily In porewater samples during the study. A definitive study was conducted in 1991 to determine persistence of the toxicity observed In 1990 … more
Date: October 1, 1992
Creator: Wade, D. C.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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