Not registered? Receive daily email alerts, subscriber notes & personalize your experience. Register Now Power forwards in the Pacific Northwest are reaching record highs on concerns of above-normal summer temperatures and a weak hydropower outlook. "We've had a declining water supply forecast throughout the spring season," David Bogema, US Army Corps of Engineers hydraulic engineer, said May 12 during the Columbia River Basin Water Management Technical Management Team meeting. The Dalles water supply forecast for the April-September forecast period started the year strong at 96% Jan. 1. That eased to 94% by Feb. 1, and despite a slight rebound to 96% March 1, the forecast slipped to 92% April 1 and then sank to 86% by May 1, according to Northwest River Forecast Center data.