Lake Alvin
| Lake Alvin | |
|---|---|
Eastern portion of Lake Alvin | |
| Location | Lincoln County, South Dakota |
| Coordinates | 43°26′27″N 096°36′40″W / 43.44083°N 96.61111°W |
| Type | artificial lake |
| Primary inflows | Nine Mile Creek |
| Primary outflows | Nine Mile Creek |
| Basin countries | United States |
| Surface elevation | 1,273 ft (388 m) |
Lake Alvin is an artificial lake in Lincoln County, South Dakota between Harrisburg, South Dakota and Granite, Iowa. The lake is formed by a dam on Nine Mile Creek just before it enters the Big Sioux River, east of Harrisburg. It is part of a 59-acre (240,000 m2) recreational area.