| Hidden Lake | |
| Location: | Custer County, Idaho |
| Coords: | 44.0789°N -114.5956°W |
| Lake Type: | Glacial |
| Outflow: | Little Boulder Creek to East Fork Salmon River |
| Basin Countries: | United States |
| Length: | 350m (1,150feet) |
| Width: | 212m (696feet) |
| Elevation: | 2905m (9,531feet) |
| Pushpin Map: | Idaho#USA |
| Pushpin Map Alt: | Location of Hidden Lake in Idaho, USA. |
Hidden 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 accessed from Sawtooth National Forest trail 683.[1]
Hidden Lake is northwest of Merriam Peak and located in the lower section of the Boulder Chain Lakes Basin.