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Cabinet GorgeCabinet Gorge Development

Completed in 1952 on the Clark Fork River, Cabinet Gorge possesses the second-largest generating capacity of any of Avista's eight hydroelectric developments. Constructed to help solve the critical Northwest energy shortage of the late 1940s and early 1950s, the concrete arch dam was completed only 21 months after its initial groundbreaking. A total of 1700 men and women worked 24 hours a day to excavate 785,000 cubic yards of rock and pour 240,000 cubic yards of concrete!

Just off Highway 200, and located on a cliff directly overlooking the dam and powerhouse, a landscaped viewpoint is open to the public during the non-winter months. Although the dam and powerhouse are located in northeastern Idaho, most of the reservoir lies in Montana. The area surrounding the reservoir offers abundant camping and wildlife viewing opportunities.

In cooperation with federal and state agencies such as the U.S. Forest Service and Montana Fish, Wildlife, and Parks, Avista has developed many recreational sites along the reservoir. In a joint 1985 effort with the Bonneville Power Administration and the Idaho Department of Fish and Game, Avista helped construct the Cabinet Gorge Fish Hatchery (which primarily produces young Kokanee). Operated by Idaho Fish and Game, the hatchery is located approximately one mile downstream of the dam, and is open for public tours.

  • Licensed Generating Capacity: 231 Megawatts
  • Height of Dam: 208 Feet
  • Generating Units: 4 turbines, 1 Kaplan, 1 mixed flow, 2 propellers
  • Storage: 42,780 acre feet
  • Minimum Flow: 5,000 cfs

 

 
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