Lake Badus
| Lake Badus | |
|---|---|
| Location | Lake County, South Dakota | 
| Coordinates | 44°08′49″N 97°08′59″W / 44.147047°N 97.149688°W | 
| Type | lake | 
| Basin countries | United States | 
| Surface elevation | 1,716 ft (523 m) | 
Lake Badus is a lake in South Dakota, in the United States.
Lake Badus takes its name from a mountain of the same name in Switzerland, the native land of a share of the first settlers.