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Spillway passage survival of hatchery yearling and subyearling chinook salmon at Ice Harbor Dam, 2002
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2005
[PDF-27.04 MB]
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Description:In 2002, the National Marine Fisheries Service estimated relative survival for river-run hatchery yearling and subyearling chinook salmon Oncorhynchus tshawytscha passing through the spillway at Ice Harbor Dam on the Snake River. At the Lower Monumental Dam juvenile fish bypass/collection facility, yearling chinook salmon were collected and marked with either a PIT tag or both a radio tag and a PIT tag, and subyearling chinook salmon were marked with a PIT tag. After a 24-h holding period, treatment and reference groups were transported to Ice Harbor Dam and released. Treatment groups were released immediately upstream from all spillbays, and reference groups were released into the tailrace 0.5 km below Ice Harbor Dam under both day and night.operations.
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Rights Information:CC0 Public Domain
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