Okanogan County Department of Emergency Management (OCDEM) is responsible for coordinating the emergency and disaster needs of the county area including the cities of Brewster, Conconully, Coulee Dam, Elmer City, Nespelem, Omak, Okanogan, Oroville, Pateros, Riverside, Tonasket, Twisp, Winthrop, and numerous unincorporated areas.