Lake Martha (South Dakota)
| Lake Martha | |
|---|---|
| Location | Marshall County, South Dakota |
| Coordinates | 45°36′41″N 97°14′01″W / 45.6114885°N 97.2335017°W |
| Type | lake |
| Surface elevation | 1,860 feet (570 m) |
Lake Martha is a natural lake in South Dakota, in the United States.
According to the Federal Writers' Project, the origin of the name is obscure.