Results of fisheries investigations in Douglas tailwater, August 1987--September 1988

Technical Report · Mon May 01 04:00:00 EDT 1989

DOI:https://doi.org/10.2172/6072340· OSTI ID:6072340

Tomljanovich, D. A.; Saylor, C. F.

Releases from Douglas Dam during July, August, and early September are characterized by low dissolved oxygen (DO), increased hydrogen sulfide, and until fall 1987, no minimum flow. Studies are underway to improve water quality in the tailwater. A five-year minimum flow demonstration began October 1, 1987. To achieve a 300 cfs minimum flow at Saffell Island, 2.5 river miles downstream from Douglas Dam, one turbine in the 3200 to 4000 cfs range is pulsed for 35 to 45 minutes every four hours. In addition to minimum flow, surface water pumps and oxygen diffusers in front of the hydro unit intakes are being evaluated as ways to increase DO in the tailwater. During this five-year demonstration water quality monitoring and biological investigations will document changes and responses to increased minimum flow and improved water quality. Objectives of the biological investigations are to document: (1) changes, characteristics, and diversity of the fish community of the tailwater using the Index of Biotic Integrity (IBI), (2) spawning locations and movement patterns of sauger in the tailwater, (3) reproduction of sauger and other species in the tailwater, and (4) fisherman distribution and creel throughout the tailwater. 10 refs., 3 figs., 16 tabs.

• Research Organization: Tennessee Valley Authority, Norris, TN (USA). Aquatic Biology Dept.
• OSTI ID: 6072340
• Report Number(s): TVA/WR/AB-89/6; ON: DE89014510
• Country of Publication: United States
• Language: English

Related Subjects

13 HYDRO ENERGY
130600* -- Hydro Energy-- Environmental Aspects
500200 -- Environment
Atmospheric-- Chemicals Monitoring & Transport-- (-1989)
54 ENVIRONMENTAL SCIENCES
ANIMALS
AQUATIC ORGANISMS
BIOLOGICAL STRESS
CHALCOGENIDES
DAMS
DISSOLVED GASES
DOCUMENT TYPES
ECOLOGICAL CONCENTRATION
ELECTRIC POWER
ELEMENTS
ENERGY SOURCES
ENVIRONMENTAL EFFECTS
EVALUATION
FEDERAL REGION IV
FISHERIES
FISHES
FLOW RATE
FLUIDS
GASES
HYDROELECTRIC POWER
HYDROGEN COMPOUNDS
HYDROGEN SULFIDES
NATIONAL ORGANIZATIONS
NONMETALS
NORTH AMERICA
OXYGEN
POWER
PROGRESS REPORT
RENEWABLE ENERGY SOURCES
SOLUTES
SULFIDES
SULFUR COMPOUNDS
SURFACE WATERS
TENNESSEE
TENNESSEE VALLEY AUTHORITY
US ORGANIZATIONS
USA
VERTEBRATES