The California Department of Water Resources is preparing a contingency plan for the potential use of the Lake Oroville emergency spillway, as DWR clears trees, rocks and other debris from the hillside near the dam where water would flow. Approximately 50 to 100 acres of trees and brushes could be affected by water releases. The removal would reduce the potential debris flow into the diversion pool and Feather River in Butte County. (Courtesy of the California Department of Water Resources)