| Grass Lake | |
| Location: | Minnehaha County, South Dakota |
| Type: | lake |
| Elevation: | 1572feet |
| Pushpin Map: | South Dakota#USA |
| Pushpin Map Alt: | Location of Grass Lake in South Dakota, USA. |
Grass Lake is a natural lake in South Dakota, in the United States.
Grass Lake received its name from the abundance of marsh grass within it.[1]