River temperatures in the tailrace of Lower Granite Dam on the Snake River rose above 67 degrees this week and the air temperature is predicted to rise above 90 degrees this weekend. That prompted the U.S. Army Corps of Engineers to increase releases of water from Dworshak Dam to keep Lower Granite tailwater temperature under 68 degrees, partially as an aid to the few adult sockeye salmon expected to return to the Snake River and Sawtooth Basin this year.
