Learn more about Columbia River Treaty dams and reservoirs and find out what Basin residents said at information sessions.
Dams & Reservoirs
Duncan Dam and Duncan Reservoir
Hugh Keenleyside Dam and Arrow Lakes Reservoir
Libby Dam and Koocanusa Reservoir
Mica Dam and Kinbasket Reservoir
Columbia River Basin Map
Use this interactive map to learn about the Columbia River system including Columbia River Treaty dams, reservoirs and pre-dam water levels. This map allows you to explore the Columbia River Basin and changes that have occurred since construction of Columbia River Treaty Dams.