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Research related to transportation of juvenile salmonids on the Columbia and Snake Rivers, 2000
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2001
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[PDF-26.56 MB]
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Description:Since 1995, the National Marine Fisheries Service has conducted evaluations at Lower Granite Dam oftransported vs. inriver migrant spring/summer chinook salmon and steelhead smolts. During 2000, we continued this work with two major changes in the study protocol. First, we tagged only wild spring/summer chinook salmon and steelhead smolts. Second, all tagged fish were released into the Lower Granite Dam tailrace. The transport group was composed of fish collected and transported at Little Goose Dam. This group will be compared to PIT-tagged fish that were not detected at a Snake River collector dam during their smolt migration. The studies were designed to compare survival to adulthood between smolts transported to below Bonneville Dam and those allowed to migrate downstream volitionally from the Lower Granite Dam tailrace under optimized inriver survival conditions. We also continued to monitor the prevalence of marine mammal abrasions on adult spring/summer chinook salmon at Lower Granite Dam.
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Rights Information:CC0 Public Domain
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