Quake Lake
| Quake Lake | |
|---|---|
Location in Montana | |
| Location | Madison / Gallatin counties, Montana, United States |
| Coordinates | 44°51′10″N 111°23′20″W / 44.8528°N 111.3889°W |
| Type | Natural/Fresh Water Lake |
| Primary inflows | Madison River |
| Primary outflows | Madison River |
| Basin countries | United States |
| Max. length | 6 mi (9.7 km) |
| Max. width | 0.25 mi (0.40 km) |
| Surface area | 611.8 acres (247.6 ha) |
| Average depth | 47.2 ft (14.4 m) |
| Max. depth | 124.88 ft (38.06 m) |
| Water volume | 26,555 acre⋅ft (32,755,000 m3) |
| Surface elevation | 6,391 ft (1,948 m) |
Quake Lake (officially Earthquake Lake) is a lake in the western United States, on the Madison River in southwestern Montana. It was created after an earthquake struck on August 17, 1959, with 28 fatalities. Northwest of West Yellowstone, Quake Lake is six miles (10 km) in length with a maximum depth of 125 feet (38 m).
U.S. Route 287 follows the lake and offers glimpses of the effects of the earthquake and landslide, and a visitor center is just off the road. The lake is mostly within Gallatin National Forest.