Mainstem Columbia River basin water supply forecasts remained mostly steady or rose just slightly over the last month, with the March forecast at The Dalles Dam at 95 percent of the 30-year average, up 2 percentage points from February.
Mainstem Columbia River basin water supply forecasts remained mostly steady or rose just slightly over the last month, with the March forecast at The Dalles Dam at 95 percent of the 30-year average, up 2 percentage points from February.