Effects of bypass system passage at Bonneville Dam second powerhouse on downstream migrant salmon and steelhead : direct capture assessment, 1990-1992

Bonneville Dam (Or. and Wash.); Columbia River

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Effects of bypass system passage at Bonneville Dam second powerhouse on downstream migrant salmon and steelhead : direct capture assessment, 1990-1992

1998
By Bonneville Dam (Or. and Wash.) ; Columbia River

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Personal Author:

Bonneville Dam (Or. and Wash.) ; Columbia River

Bonneville Dam (Or. and Wash.) ; Columbia River Less -
Corporate Authors:

Dawley, Earl M. ; Gilbreath, Lyle G. ; Ledgerwood, Richard D. ; Bentley, Paul J. ; Sandford, Benjamin P.

Dawley, Earl M. ; Gilbreath, Lyle G. ; Ledgerwood, Richard D. ; Bentley, Paul J. ; Sandford, Benjamin P. Less -
Conference Authors:

Northwest Fisheries Science Center (U.S.). Fish Ecology Division. ; United States. Army. Corps of Engineers

Northwest Fisheries Science Center (U.S.). Fish Ecology Division. ; United States. Army. Corps of Engineers Less -
NOAA Program & Office:

NMFS (National Marine Fisheries Service) ; NWFSC (Northwest Fisheries Science Center)

NMFS (National Marine Fisheries Service) ; NWFSC (Northwest Fisheries Science Center) Less -
Description:

Passage survival tests at Bonneville Dam using coded-wire-tagged subyearling chinook salmon, from 1987 to 1992, indicated substantially poorer survival for fish using the bypass systems than other passage routes through the dam. In 1990, we began research designed to identify conditions and physical features of the bypass system at the Bonneville Dam Second Powerhouse which debilitated or injured juvenile salmonids during passage. Marked fish were released into the bypass system and then captured at the terminus of the discharge conduit using a trap-net.
Keywords:

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Effects of bypass system passage at Bonneville Dam second powerhouse on downstream migrant salmon and steelhead : direct capture assessment, 1990-1992
Format:

PDF
Document Type:

Non-series Report
Funding:

Contract no. DACW57-85-H-0001
Name as Subject:

Passage survival tests at Bonneville Dam using coded-wire-tagged subyearling chinook salmon, from 1987 to 1992, indicated substantially poorer survival for fish using the bypass systems than other passage routes through the dam. In 1990, we began research designed to identify conditions and physical features of the bypass system at the Bonneville Dam Second Powerhouse which debilitated or injured juvenile salmonids during passage. Marked fish were released into the bypass system and then captured at the terminus of the discharge conduit using a trap-net.
License:

https://creativecommons.org/publicdomain/zero/1.0/
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CC0 Public Domain
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Library
Main Document Checksum:

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urn:sha256:03bb61181f55e9c39a06d51c596edb8347f5af10d24f8580c2fcd8754aa381f4
Download URL:

https://repository.library.noaa.gov/view/noaa/50188/noaa_50188_DS1.pdf
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Effects of bypass system passage at Bonneville Dam second powerhouse on downstream migrant salmon and steelhead : direct capture assessment, 1990-1992

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