Clark Canyon Dam is an earthfill dam located in Beaverhead County, Montana, about 20 miles (30 km) south of the county seat of Dillon. The dam impounds the waters of the Beaverhead River, creating a body of water known as Clark Canyon Reservoir. The structure was constructed in 1961-1964 by the United States Bureau of Reclamation, to hold water for downstream irrigation and for flood-control purposes.Plan to visit Clark Canyon Dam during your Dillon vacation using our convenient Dillon tour planning website.
Clark Canyon Dam has a crest length of 2,950 feet (899 m), and a maximum height of 147 feet (45 m). The dam contains 1,970,000 cubic yards (1,510,000 m³) of material. The elevation of the dam crest is 5,578 feet (1,700 m). The reservoir has a total capacity of 325,324 acre-feet (401,281,000 m3), and when full has a surface area of 5,903 acres (24 km²).
Construction of the dam and reservoir required the relocation of U.S. Route 91 (rebuilt as Interstate 15) and a main line of the Union Pacific Railroad. The reservoir inundated the former site of the small community of Armstead, Montana, and the site of Camp Fortunate, where the Lewis and Clark Expedition camped from August 17 to 22, 1805 and held negotiations with the Shoshone.
Clark Canyon Dam reviews
Free camping up to 14 days, trash service and bathrooms. Plenty of boating and fishing. The cons are it’s windy and there are no trees; also watch for rattlesnakes. Otherwise we had a great time and..... more »
I knew this was not the best time of the year to stop, 19 degrees with a stiff breeze was a challenge. However, this is the only time of the year I am in southern Montana. Both sides of the dam are... more »
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