Cochrane Dam

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Cochrane Dam
Cochrane Dam is located in Montana
Cochrane Dam
Location of Cochrane Dam in Montana
Country United States of America
Location Cascade County, Montana
Coordinates 47°33′11″N 111°08′56″W / 47.55306°N 111.14889°W / 47.55306; -111.14889Coordinates: 47°33′11″N 111°08′56″W / 47.55306°N 111.14889°W / 47.55306; -111.14889
Status In use
Opening date 1958
Owner(s) NorthWestern Corporation
Dam and spillways
Type of dam Concrete gravity
Impounds Missouri River
Height 59 ft (18 m)
Length 753 ft (230 m)
Spillways 1
Spillway type Gated service
Creates Cochrane Lake
Total capacity 2,700 acre·ft (3,300,000 m3)
Catchment area 24,000 sq mi (62,000 km2)
Surface area 218 acres (88 ha)
Power Station
Turbines 2
Installed capacity 64 MW

Cochrane Dam is a run-of-the river hydroelectric dam on the Missouri River, about 8 miles (13 km) northeast of Great Falls in the U.S. state of Montana.[1] The dam has a concrete gravity design and is 59 feet (18 m) high and 753 feet (230 m) long. Its power station has two generators capable of producing 64 megawatts. Construction of the dam was finished in 1958.[2] Montana Power Company originally built the dam, PPL Corporation purchased it in 1997 and sold it to NorthWestern Corporation in 2014.


  1. ^ "Dams". PPL Montana. Retrieved 2011-03-06. 
  2. ^ "Cochrane Dam". Producing Power. PPL Montana. Retrieved 2011-03-06.