Canyon Ferry Lake

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Canyon Ferry Lake
Canyon Ferry Lake
LocationLewis and Clark and Broadwater Counties in
 United States.
Located near Helena, Montana.
Coordinates46°28′53″N 111°32′47″W / 46.481312°N 111.546404°W / 46.481312; -111.546404Coordinates: 46°28′53″N 111°32′47″W / 46.481312°N 111.546404°W / 46.481312; -111.546404
Primary inflowsMissouri River
Primary outflowsMissouri River
Catchment area15,904 sq mi (41,190 km2)
Basin countriesUnited States
Max. length30 miles (48 km)
Max. width5 miles (8.0 km)
Surface area33,500 acres (13,600 ha)
Water volume2,051,000 acre⋅ft (2.530 km3)
Shore length176 mi (122 km)
Surface elevation3,797 ft (1,157 m) msl
IslandsCemetery Island
SettlementsCanton and Townsend
1 Shore length is not a well-defined measure.

Canyon Ferry Lake is a reservoir on the Missouri River near Helena, Montana and Townsend, Montana. It is Montana's third largest body of water, covering 35,181 acres (142 km²) and 76 miles (122 km) of shore (1). It was formed by the building of Canyon Ferry Dam, which was completed in 1954 and has been used for electricity, irrigation, and flood controls since.


The lake is a popular outdoor destination providing boating, fishing, wildlife habitat, and is nestled against the Big Belt Mountains of the Rocky Mountains. Canyon Ferry Lake has also become a leading ice boat venue for iceboat racing and iceboat world speed record attempts.[1][2] The former town of Canton lies beneath the lake, having been submerged following construction of the dam.

See also[edit]


  1. ^ "Archived copy". Archived from the original on 2007-06-28. Retrieved 2009-04-12.CS1 maint: Archived copy as title (link)
  2. ^

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