

Clark Canyon Dam impounds the Beaverhead River about 20 miles southwest of Dillon, Montana, creating the Clark Canyon Reservoir. The zoned earthfill dam was completed in 1964 as part of the U.S. Bureau of Reclamation's Pick-Sloan Missouri Basin Program / East Bench Unit, which was authorized by the Flood Control Acts of 1944 and 1946.
In 2004, Symbiotics began federal licensing for a run-of-river hydroelectric project on Clark Canyon Dam. The project is anticipated to have an installed capacity of 4.75 MW from two turbine/generator units, with average production of 16.5 GWh annually. A license for the project was received in August 2009.