Hebgen Dam, Embankment dam in Gallatin County, Montana.
Hebgen Dam is an embankment structure with a concrete core that crosses the Madison River. The dam holds back water to form a large lake that spreads across the valley.
Construction finished in 1914 and ownership has changed hands several times over the decades. The dam has supplied power to the region since it was completed.
The lake attracts people for fishing, boating, and water activities that draw visitors throughout the year. These recreational uses shape how the area feels and how people spend their time here.
Visitors can fish, boat, or relax along the shoreline at this location. The best time to visit is during summer and clear weather, as snow and ice in other seasons can limit activities.
During a 1959 earthquake, water surged over the dam's crest four times, yet the structure held firm. This magnitude 7.5 event revealed the remarkable strength of the engineering.
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