Migration behavior of adult Pacific lamprey in the lower Columbia River and evaluation of Bonneville Dam modifications to improve passage, 2001

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

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Migration behavior of adult Pacific lamprey in the lower Columbia River and evaluation of Bonneville Dam modifications to improve passage, 2001

2003
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:

Moser, Mary L. ; Bjornn, Theodore C. ; Ogden, Darren A. ; McCarthy, Sarah G.

Moser, Mary L. ; Bjornn, Theodore C. ; Ogden, Darren A. ; McCarthy, Sarah G. Less -
Conference Authors:

Northwest Fisheries Science Center (U.S.). Fish Ecology Division. ; Pacific States Marine Fisheries Commission. ; Geological Survey (U.S.). ; University of Idaho. Department of Fish & Wildlife Resources. ; United States. Army. Corps of Engineers. Portland District.

Northwest Fisheries Science Center (U.S.). Fish Ecology Division. ; Pacific States Marine Fisheries Commission. ; Geological Survey (U.S.). ; University of Idaho. Department of Fish & Wildlife Resources. ; United States. Army. Corps of Engineers. Portland District. 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:

In previous years of study, we used radiotelemetry to identify obstacles to passage of adult Pacific lamprey (Lampetra tridentata) at lower Columbia River dams. Lampre> have the greatest difficulty gaining entrance to the fishways, negotiating collection channels and transition areas, and passing through count station areas at the top of the ladders. The objectives of our research in 2001 were to: 1) assess behavior, passage success, and migration rates of radio-tagged adult Pacific lamprey at lower Columbia River dams, 2) evaluate the effects of lower water velocity and structural modifications on passage of lamprey at the spillway entrances at Bonneville Dam, 3) evaluate effects of modifications to diffuser gratings (i.e., addition of plates to permit attachment of lamprey) on passage of adult lamprey at Bonneville Dam, and 4) more intensively monitor lamprey passage at the tops of Bonneville Dam ladders to identify obstacles to lamprey passage.
Keywords:

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Migration behavior of adult Pacific lamprey in the lower Columbia River and evaluation of Bonneville Dam modifications to improve passage, 2001
Format:

PDF
Document Type:

Non-series Report
Funding:

Contract no. E96950021
Name as Subject:

In previous years of study, we used radiotelemetry to identify obstacles to passage of adult Pacific lamprey (Lampetra tridentata) at lower Columbia River dams. Lampre> have the greatest difficulty gaining entrance to the fishways, negotiating collection channels and transition areas, and passing through count station areas at the top of the ladders. The objectives of our research in 2001 were to: 1) assess behavior, passage success, and migration rates of radio-tagged adult Pacific lamprey at lower Columbia River dams, 2) evaluate the effects of lower water velocity and structural modifications on passage of lamprey at the spillway entrances at Bonneville Dam, 3) evaluate effects of modifications to diffuser gratings (i.e., addition of plates to permit attachment of lamprey) on passage of adult lamprey at Bonneville Dam, and 4) more intensively monitor lamprey passage at the tops of Bonneville Dam ladders to identify obstacles to lamprey passage.
License:

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

CC0 Public Domain
Compliance:

Library
Main Document Checksum:

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urn:sha256:5e3d760bbb8b85463bc6452f5e38e7efd902d4e4820c0ff30c61e5d4d6eb2285
Download URL:

https://repository.library.noaa.gov/view/noaa/50209/noaa_50209_DS1.pdf
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Migration behavior of adult Pacific lamprey in the lower Columbia River and evaluation of Bonneville Dam modifications to improve passage, 2001

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