Silting Forces Corps To Raise Lower Granite Pool To Keep Navigation Channel Open; Fish Managers Concerned About Impacts To Migrating Juvenile Salmon, Steelhead

As of April 3 the U.S. Army Corps of Engineers began a controversial operation that raises the Lower Granite Dam reservoir elevation to ensure that it can maintain a 14-foot depth in the federal navigation channel at the Port of Clarkstonwhen Snake River flows are low.

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