As many as 45 percent of tagged spring Chinook in estuary disappear before reaching Bonneville Dam - Chinook Observer

As many as 45 percent of tagged spring Chinook in estuary disappear before reaching Bonneville Dam Chinook Observer NOAA Fisheries research indicates that after accounting for harvest, in some years as many as 45 percent of the salmon tagged in the estuary disappear before reaching Bonneville Dam, according to a presentation earlier this month to the Northwest Power ...

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