The Cassimer Bar Wildlife Unit is managed by Douglas PUD in cooperation with the Confederated Tribes of the Colville Reservation. The Cassimer Bar Wildlife Management Area protects and enhances wildlife habitat on 116 acres of land that was set aside in 1970. In the mid-1980s, a dike and three sloughs were constructed in order to create wetland habitat. Cassimer Bar is a designated location on the “Cascade Loop” of the Washington Audubon Society’s Great Washington State Birding Trail.