Noxon Rapids Dam

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Noxon Rapids Dam
Noxon Reservoir.JPG
Aerial view of the reservoir and dam
LocationSanders County, Montana
Construction began1955[1]
Opening date1959[2]
Construction cost$85 million[3]
Dam and spillways
ImpoundsClark Fork
Height260 ft (79 m)[4]
Length5,840 ft (1,780 m)[5]
CreatesNoxon Reservoir
Total capacity400,000 acre feet (490,000,000 m3)[5]
Catchment area21,800 sq mi (56,500 km²)[5]
Surface area7,700 acres (3,100 hectares)[6]
Power Station
Installed capacity527 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 527 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 2018-04-04.
  8. ^ [1] UNEP Dams and Development Project