ARIEL — PacifiCorp was spilling large amounts of water at Merwin, Yale and Swift dams Thursday as it copes with the stream flow from the wettest place in Southwest Washington — the upper watershed of the North Fork of the Lewis River.
“It’s swung completely in the other direction,’’ said Frank Shrier, principal scientist for PacifiCorp, recalling the dry winter, spring and summer of 2015 in the Lewis River system.
The utility is spilling 19,000 cubic feet per second at Merwin Dam, 20,000 at Yale Dam and 10,000 cubic feet per second at Swift Dam, Shrier told the Lewis River Aquatic Coordination Committee on Thursday morning.
The committee is a monthly meeting of PacifiCorp, state and federal fishery agencies, the Forest Service, Cowlitz PUD, Indian tribes and others involved in Lewis River management under the utility’s 2008 federal license to operate Merwin, Yale and Swift dams.
Inflows at Swift were 45,000 cubic feet per second on Wednesday and 90,000 cfs at Merwin, he said.