Cottonwood Lake (Marshall County, South Dakota)
| Cottonwood Lake | |
|---|---|
| Location | Marshall County, South Dakota |
| Coordinates | 45°43′57″N 97°25′37″W / 45.73250°N 97.42694°W |
| Type | lake |
| Surface elevation | 1,827 feet (557 m) |
Cottonwood Lake is a lake in Marshall County, South Dakota, in the United States.
The lake was so named on account of the cottonwood trees found at the lake.