Evaluation of Steelhead Kelt Migration Success through The Dalles and Bonneville Dams, 2012 BISHES RAYAMAJHI, CHRISTA WOODLEY, JINA KIM, GENE PLOSKEY, MARK WEILAND PACIFIC NORTHWEST NATIONAL LABORATORY DERREK FABER OREGON DEPARTMENT OF FISH AND WILDLIFE BOB WERTHEIMER USACE 1
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Evaluation of Steelhead Kelt Migration Success through The Dalles and Bonneville Dams, 2012
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Evaluation of Steelhead Kelt
Migration Success through The
Dalles and Bonneville Dams, 2012
BISHES RAYAMAJHI, CHRISTA WOODLEY, JINA KIM, GENE
PLOSKEY, MARK WEILAND
PACIFIC NORTHWEST NATIONAL LABORATORY
DERREK FABER
OREGON DEPARTMENT OF FISH AND WILDLIFE
BOB WERTHEIMER
USACE
1
Background
For numerous reasons the number of adult steelhead
returning to the Columbia River basin have declined
Steelhead are iteroparous allowing for repeat spawning
Fertility of repeat spawners tends to be higher than first
time spawners
Problem
Post-spawn kelt tend to have low energy reserves
Effects swimming ability
2
Goal and Objectives: Kelt Evalution
Goal
Provide managers with the necessary data to make
informed decisions on dam operations to improve passage