| Doubtful Lake | |
| Location: | North Cascades National Park, Chelan County, Washington, United States |
| Coords: | 48.4742°N -121.0478°W[1] |
| Lake Type: | Alpine lake |
| Outflow: | Doubtful Creek |
| Basin Countries: | United States |
| Length: | 450yd |
| Width: | 400yd |
| Elevation: | 5390feet |
| Pushpin Map: | Washington#USA |
| Pushpin Map Alt: | Location of Doubtful Lake in Washington, USA. |
Doubtful Lake is located in North Cascades National Park, in the U. S. state of Washington.[2] Doubtful Lake can be accessed on foot by way of Cascade Pass and following the Sahale Arm Trail to another side trail which leads to the lake. A designated backcountry camping zone is located at the lake.[3] [4]