BOISE, Idaho (AP) — Managers have started releasing more cold water from a reservoir in northern Idaho for endangered Snake River sockeye salmon following a year where 99 percent of the run died due to lethally hot water.

Bumping up the amount of 43-degree water released from Dworshak Reservoir on the North Fork Clearwater River is expected to keep water temperature at Lower Granite Dam on the Snake River under 68 degrees.

Ritchie Graves of the National Oceanic and Atmospheric Administration says the Columbia Basin is much more hospitable for salmon this year than last, when low water and an extended heat wave pushed water temperatures past 70 degrees.

About 285,000 sockeye have entered the Columbia River so far this year, with at least 1,000 heading for the Snake River.

More From News Radio 1310 KLIX