Survival Estimates for the Passage of Spring-Migrating Juvenile Salmonids through Snake and Columbia River Dams and Reservoirs, 2000 Annual Report.

Technical Report · Thu Feb 01 04:00:00 EST 2001

DOI:https://doi.org/10.2172/794048· OSTI ID:794048

Zabel, Richard; Smith, Steven G; Muir, William D ^[1]

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1. Northwest and Alaska Fisheries Science Center, Fish Ecology Division, Seattle, WA

In 2000, the National Marine Fisheries Service and the University of Washington completed the eight year of a study to estimate survival of juvenile salmonids (Oncorhynchus spp.) passing through dams and reservoirs on the Snake and Columbia Rivers. A total of 20,313 hatchery steelhead were tagged with passive integrated transpoder (PIT) tags and released at Lower Granite Dam for reach survival estimation. They did not PIT tag any yearlying chinook salmon (O. tshawytscha) for reach survival estimates in 2000 because sufficient numbers for these estimates were available from other studies. Primary research objectives in 2000 were (1) to estimate reach and project survival in the Snake and Columbia Rivers throughout the yearling chinook salmon and steelhead migrations, and (2) to evaluate the survival-estimation models under prevailing conditions. In addition, they estimated survival from point of release to Lower Granite Dam and below for chinook salmon, steelhead, and sockeye salmon (O.nerka) PIT tagged and released at Snake River basin hatcheries and chinook salmon and steelhead PIT tagged and released at Snake River basin hatcheries and chinook salmon and steelhead PIT tagged and released at Snake River basin smolt traps. This report provides reach survival and travel time estimates for 2000 for PIT-tagged yearling chinook salmon and steelhead (hatchery and wild) in the Snake and Columbia Rivers. Results are reported primarily in the form of tables and figures. Further details on methodology and statistical models used are provided in previous reports cited in the text.

• Research Organization: Bonneville Power Administration, Portland, OR (US)
• Sponsoring Organization: US Department of Energy (US)
• OSTI ID: 794048
• Report Number(s): DOE/BP-10891-10
• Country of Publication: United States
• Language: English

Related Subjects

13 HYDRO ENERGY
54 ENVIRONMENTAL SCIENCES
COLUMBIA RIVER
DAMS
FISHERIES
GRANITES
JUVENILES
RIVERS
SALMON
SALMONIDAE - EFFECT OF DAMS ON - COLUMBIA RIVER WATERSHED
SALMONIDAE - EFFECT OF DAMS ON - SNAKE RIVER WATERSHED (WYO.-WASH.)
SALMONIDAE - MIGRATION - COLUMBIA RIVER WATERSHED
SALMONIDAE - MIGRATION - SNAKE RIVER WATERSHED (WYO.-WASH.)
SNAKES
STATISTICAL MODELS
WASHINGTON