AHSAKAH, Idaho -- Receding snowpack in the Clearwater sub-basin prompted reservoir managers to shift their focus from seasonal flood-risk-management to recreation-fill operations at Dworshak Reservoir, according to U.S. Army Corps of Engineers water-management officials at the Walla Walla District. During a Wednesday snow line flight of the North Fork Clearwater Basin, reservoir managers observed a firm snow line at or above 6,000 feet in the basin -- about 4 percent, or less, of snow cover across the sub-basin. That significant reduction in snowpack, led managers to reduce discharges from Dworshak Dam and begin refilling the reservoir on Thursday. The reservoir is already within 1 feet of full-pool elevation (1600 feet).