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

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

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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 Dawley, Earl M. ; Gilbreath, Lyle G. ; Ledgerwood, Richard D. ; ...

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Personal Author:

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

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

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

Chinook Salmon Effect Of Dams On Migration Research Chinook Salmon Effect Of Dams On
Format:

PDF
Document Type:

Non-series Report
Funding:

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

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

https://creativecommons.org/publicdomain/zero/1.0/
Rights Information:

CC0 Public Domain
Compliance:

Library
Main Document Checksum:

urn:sha-512:034178b309094f6d79e581681349f34accaf440dde0aa070e836d79fdba5fe69556e472bc3d32c6065349d2c6a451d4176fed5ddc562eee54cc9cbe3ba5f1ba2
Download URL:

https://repository.library.noaa.gov/view/noaa/50188/noaa_50188_DS1.pdf
File Type:

[PDF - 24.59 MB ]

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