Corps Report: Pinniped Predation Consumed 4.7 Percent Of Salmonids In 2017 In Bonneville Tailwater

Some 5,384 salmonids were eaten by sea lions in Bonneville Dam’s tailwater in 2017 before they could migrate up over the dam. That’s 4.7 percent of the entire runs of spring chinook and summer/winter steelhead that passed the dam between Jan. 10 and June 17, 2017, which is the period the U.S. Army Corps of Engineers monitored the number of pinnipeds and how many and what kinds of fish they consumed, according to a recent report.

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