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Effects of reservoir releases on water quality, macroinvertebrates, and fish in tailwaters: field study results. Final report

Technical Report ·
OSTI ID:5848804
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This report summarizes field investigations conducted at seven reservoirs in 1979 and 1980 to determine the effect of reservoir releases on tailwater biota. The study sites differ greatly in project purpose, depth of water release from the reservoir, and location and are representative of many U.S. Army Corps of Engineers reservoirs throughout the United States. Studies were conducted in tailwaters below both flood-control and peaking hydropower projects. Effects of reservoir discharge were most evident near the dams where environmental stress was most severe; farther downstream the effect were moderated. The invertebrate and fish communities in tailwaters were affected most by the temperature, volume, and timing of the discharges. High levels of iron and manganese occurred in most tailwaters, but their effects on invertebrates and fish were not addresed in this study. The numbers of invertebrate and fish species were largest in tailwaters of flood-control projects with warmwater release and smallest in tailwaters of large hydropower projects.
Research Organization:
Fish and Wildlife Service, Bowling Green, KY (USA). East Central Reservoir Investigations
OSTI ID:
5848804
Report Number(s):
AD-A-126770/7; WES-TR-E-83-6
Country of Publication:
United States
Language:
English

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Related Subjects

13 HYDRO ENERGY
130600* -- Hydro Energy-- Environmental Aspects
520400 -- Environment
Aquatic-- Thermal Effluents Monitoring & Transport-- (-1989)
54 ENVIRONMENTAL SCIENCES
AMMONIA
ANIMALS
AQUATIC ECOSYSTEMS
AQUATIC ORGANISMS
BENTHOS
CHALCOGENIDES
CONTROL
DAMS
ECOSYSTEMS
ELEMENTS
ENVIRONMENTAL EFFECTS
ENVIRONMENTAL QUALITY
FISHES
FLOOD CONTROL
HYDRIDES
HYDROELECTRIC POWER PLANTS
HYDROGEN COMPOUNDS
INVERTEBRATES
IRON
MANGANESE
METALS
NITROGEN COMPOUNDS
NITROGEN HYDRIDES
NONMETALS
OXYGEN
OXYGEN COMPOUNDS
PARTICLES
PARTICULATES
POWER PLANTS
RIVERS
SAMPLING
STREAMS
SULFIDES
SULFUR COMPOUNDS
SURFACE WATERS
TEMPERATURE EFFECTS
TRANSITION ELEMENTS
VERTEBRATES
WATER
WATER QUALITY
WATER RESERVOIRS