| Hebgen Dam | |
|---|---|
 The damaged Hebgen Dam in 1959 | |
  Location in the United States  Location in Montana | |
| Official name | Hebgen Dam |
| Location | Gallatin County, Montana |
| Coordinates | 44°51′49″N 111°20′08″W / 44.86361°N 111.33556°W |
| Opening date | 1914 |
| Owner(s) | NorthWestern Corporation |
| Dam and spillways | |
| Type of dam | Concrete-core, earthen embankment |
| Impounds | Madison River |
| Height | 85 feet (26 m) |
| Length | 721 feet (220 m) |
| Spillway type | Chute, gate-controlled |
| Reservoir | |
| Creates | Hebgen Lake |
| Total capacity | 325,000 acre⋅ft (0.401 km3)[1] |
| Catchment area | 905 square miles (2,340 km2) |
| Surface area | 21 square miles (54 km2) |
Hebgen Dam is a concrete-core earthen embankment dam in the western United States, located on the Madison River in southwestern Montana. The dam is 85 feet (26 m) tall and 721 feet (220 m) in length; its purpose is to store and regulate water for other downstream reservoirs and hydroelectric power plants.[2] Montana Power Company originally built the dam, PPL Corporation purchased it in 1997 and sold it to NorthWestern Corporation in 2014.
- ^ "HEBGEN LAKE IS 65 MILES AROUND". Montana Standard. 19 August 1959. Archived from the original on 8 March 2012. Retrieved 11 July 2010.
- ^ "Hebgen Lake". PPL Montana. Retrieved 11 July 2010.