Lake Madison
| Lake Madison | |
|---|---|
| Location | Lake County, South Dakota |
| Coordinates | 43°57′35″N 97°01′51″W / 43.9597°N 97.0308°W |
| Type | Lake |
| Basin countries | United States |
| Surface elevation | 1,604 ft (489 m) |
Lake Madison is a natural lake in South Dakota, in the United States.
Lake Madison was named after Madison, Wisconsin, as was the nearby city of Madison, South Dakota.