Canyon Ferry Lake

Canyon Ferry Lake
Canyon Ferry Lake
Location of Canyon Ferry Lake in Montana, USA.
Location of Canyon Ferry Lake in Montana, USA.
Canyon Ferry Lake
Location of Canyon Ferry Lake in Montana, USA.
Location of Canyon Ferry Lake in Montana, USA.
Canyon Ferry Lake
LocationLewis and Clark and Broadwater Counties in
 Montana,
 United States.
Located near Helena, Montana.
Coordinates46°28′53″N 111°32′47″W / 46.481312°N 111.546404°W / 46.481312; -111.546404
Typereservoir
Primary inflowsMissouri River
Primary outflowsMissouri River
Catchment area15,904 sq mi (41,190 km2)
Basin countriesUnited States
Max. length30 mi (48 km)
Max. width5 mi (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.