Clark Canyon Dam, Earthfill dam on Beaverhead River near Dillon, Montana.
Clark Canyon Dam stretches 2,950 feet across the Beaverhead River with a height of 147 feet, forming a substantial reservoir of 5,903 surface acres.
The United States Bureau of Reclamation constructed the dam between 1961 and 1964 as part of the Pick-Sloan Missouri Basin Program for irrigation and flood control.
The reservoir covers the former Camp Fortunate site, where the Lewis and Clark Expedition met the Lemhi Shoshoni Tribe and Sacagawea reunited with her community.
The reservoir provides water storage of 325,324 acre-feet for agricultural irrigation and contains multiple boat ramps, picnic areas, and nine campgrounds with 96 sites.
The construction required relocating both U.S. Route 91, which became Interstate 15, and a main line of the Union Pacific Railroad.
Location: Beaverhead County
GPS coordinates: 45.00000,-112.85700
Latest update: March 14, 2025 06:57
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