| Emerald Lake | |
| Location: | Custer County, Idaho |
| Coords: | 44.0513°N -114.6097°W |
| Lake Type: | Glacial |
| Outflow: | Little Boulder Creek to East Fork Salmon River |
| Basin Countries: | United States |
| Length: | 214m (702feet) |
| Width: | 140m (460feet) |
| Elevation: | 3020m (9,910feet) |
| Pushpin Map: | Idaho#USA |
| Pushpin Map Alt: | Location of Emerald Lake in Idaho, USA. |
Emerald Lake is an alpine lake in Custer County, Idaho, United States, located in the White Cloud Mountains in the Sawtooth National Recreation Area. While no trails lead to the lake, it can be accessed from Sawtooth National Forest trail 047.[1]
Emerald Lake is northeast of Merriam Peak, upstream of Baker and Cornice Lakes, and downstream of Glacier and Rock Lakes.