Sea Lions Leave Bonneville Dam; Impact On Spring Chinook Run Well Below The High Predation Years

California and Steller sea lions that have in recent years congregated in springtime below the Columbia River’s Bonneville Dam to prey on passing salmon and steelhead, as well as white sturgeon and other fish species, have for the most part moved on to other business, according to U.S. Army Corp of Engineers researchers studying pinniped impacts on protected fish stocks.

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