| Boulder Lake | |
| Location: | Custer County, Idaho |
| Coords: | 44.0982°N -114.614°W |
| Lake Type: | Glacial |
| Outflow: | Big Boulder Creek to East Fork Salmon River |
| Basin Countries: | United States |
| Length: | 200m (700feet) |
| Width: | 85m (279feet) |
| Elevation: | 3065m (10,056feet) |
| Pushpin Map: | Idaho#USA |
| Pushpin Map Alt: | Location of Boulder Lake in Idaho, USA. |
Boulder Lake is an alpine lake in Custer County, Idaho, United States, located in the White Cloud Mountains in the Sawtooth National Recreation Area. The lake is in the Big Boulder Lakes Basin, and is accessed from Sawtooth National Forest trails 601 and 680.[1]
Boulder Lake is just east of D. O. Lee Peak and near several other lakes including Cove, Gentian, Snow Lakes.