Noxon Rapids Dam

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Noxon Rapids Dam
Noxon Reservoir.JPG
Aerial view of the reservoir and dam
Location Sanders County, Montana
Construction began 1955[1]
Opening date 1959[2]
Construction cost $85 million[3]
Operator(s) Avista
Dam and spillways
Impounds Clark Fork
Height 260 ft (79 m)[4]
Length 5,840 ft (1,780 m)[5]
Creates Noxon Reservoir
Total capacity 400,000 acre feet (490,000,000 m3)[5]
Catchment area 21,800 sq mi (56,500 km²)[5]
Surface area 7,700 acres (3,100 hectares)[6]
Power station
Operator(s) Avista
Turbines 5[7]
Installed capacity 488 mw[7]

Noxon Rapids Dam is an earthfill gravity-type hydroelectric dam on the Clark Fork river, in the northwest part of the U.S. state of Montana.

The dam is located in the far northwest of Montana near the Idaho border. Downriver of Noxon Rapids Dam the Clark Fork is again impounded by the Cabinet Gorge Dam.

The operating capacity of Noxon Rapids Dam at full turbine flow and full pool is 466 MW.[8] The project is owned and operated by Avista.

See also[edit]


  1. ^ Avista (2009). "We've Made History Together" (PDF). Retrieved 2015-01-11. 
  2. ^ Montana Department of Fish, Wildlife and Parks (April 1985). "Wildlife and Wildlife Habitat Mitigation Plan for the Nixon Rapids and Cabinet Gorge Hydroelectric Projects". Retrieved 2015-01-09. 
  3. ^ "Noxon Rapids Dam". Retrieved 2015-01-11. 
  4. ^ Kalispel Natural Resource Department (2014-03-09). "Yes, It's Happening…..Fish Passage on 6 Dams in the Pend Oreille & Clark Fork Rivers for Resident Fish" (PDF). Retrieved 2015-01-09. 
  5. ^ a b c Noxon Rapids Dam, NPDP Dam Directory
  6. ^ United States Army Corps of Engineers (March 2014). "Selective Control of Eurasian Watermilfoil and Curlyleaf Pondweed in Noxon Rapids Reservoir, Montana acres" (PDF). Retrieved 2015-01-11. 
  7. ^ a b Avista Corporation. "Clark Fork River Dams". Retrieved 2015-01-09. 
  8. ^ [1] UNEP Dams and Development Project