A Fisheries Evaluation of the Richland and Wapato Canal Fish Screening Facilities, Spring 1987 : Annual Report.
We evaluated the effectiveness of new fish screening facilities at the Richland and Wapato canals in south-central Washington State. The screen integrity tests at the Richland Screens indicated that 100% of fall chinook salmon fry (Oncorhynchus tshawytscha) released in front of the screens were prevented from entering the canal behind the screens. Our estimate is based on a 61% catch efficiency for control fish planted behind the screens. At the Wapato Canal, we estimated that between 3% and 4% of the test fish were either impinged on the screen surface and passed over the screens or passed through faulty screen seals. Our estimate is based over the screens or passed through faulty screen seals. Our estimate is based on a greater than 90% capture of control fish released in front of the screens. At the Wapato Screens, we estimated that 0.8% of steelhead smolts (Salmo gairdneri) and 1.4% of spring chinook salmon smolts released during low canal flow tests wee descaled. During full canal flow tests, 1.6% of the steelhead and 3.1% of the spring chinook salmon released were descaled. The fish return pipe at the Wapato Canal was tested: the estimate of descaled test fish wa not different from the estimate of descaled control fish. The time required for fish to exit from the Wapato Screen forebay varied with species and with canal flow. During low canal flows, 43.2% of steelhead and 61.6% of spring chinook salmon smolts released at the trash racks were captured in the fish return within 96 hr. 11 refs., 11 figs., 10 tabs.
- Research Organization:
- Pacific Northwest Laboratory, Richland, WA (USA)
- Sponsoring Organization:
- US Bonneville Power Administration
- DOE Contract Number:
- AC06-76RL01830
- OSTI ID:
- 6304440
- Report Number(s):
- DOE/BP-01830-3; ON: DE89011522
- Resource Relation:
- Other Information: Portions of this document are illegible in microfiche products
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
54 ENVIRONMENTAL SCIENCES
FISH PASSAGE FACILITIES
EVALUATION
MIGRATION
MONITORING
POWER GENERATION
ENVIRONMENTAL IMPACTS
BONNEVILLE POWER ADMINISTRATION
PROGRESS REPORT
SALMON
TROUT
WASHINGTON
ANADROMOUS FISHES
ANIMALS
AQUATIC ORGANISMS
DOCUMENT TYPES
FEDERAL REGION X
FISHES
NATIONAL ORGANIZATIONS
NORTH AMERICA
US DOE
US ORGANIZATIONS
USA
VERTEBRATES
Steelhead (Fish) - Mortality
Fish screens
130600* - Hydro Energy- Environmental Aspects
520500 - Environment
Aquatic- Site Resource & Use Studies- (-1989)