Lakes / South Dakota / Sanborn County / Twin Lakes
Twin Lakes, Sanborn County, South Dakota
139.86 acres
Surface Area
Where It Sits, and How Deep It Goes
Locator - South Dakota
43.96 degrees N, 98.33 degrees W - Sanborn County. State and county outlines drawn from Census boundary data; the lake marker is placed by its USGS National Hydrography Dataset coordinates, not by eye. Schematic - not a survey map.
How Twin Lakes Stacks Up
- Larger than 53% of the 533 lakes counted in South Dakota.
- About 85 miles from Sioux Falls, as the crow flies.
Lakes Nearby
| Lake | County | Distance | Surface Area |
|---|---|---|---|
| Grass Lake | Jerauld | 0.7 mi | 64.74 acres |
| McCoy Lake | Sanborn | 5.0 mi | 61.28 acres |
| Long Lake | Sanborn | 7.2 mi | 224.7 acres |
| Letcher Lake | Sanborn | 11 mi | 27.18 acres |
| Wilmarth Lake | Aurora | 14 mi | 106.26 acres |
| Deans Lake | Jerauld | 16 mi | 26.29 acres |
Straight-line distance between lake centers.
Facts and Figures
Questions About Twin Lakes
How Big Is Twin Lakes?
Twin Lakes covers 139.86 acres in Sanborn County, South Dakota.
What Is the Largest Lake in Sanborn County?
Long Lake is the largest lake in Sanborn County, at 224.7 acres.
Largest Lakes in South Dakota
| # | Lake | County | Surface Area | Max Depth |
|---|---|---|---|---|
| 1 | Lake Oahe | Dewey | 309,912.57 acres | - |
| 2 | Lake Francis Case | Charles Mix | 82,166.92 acres | - |
| 3 | Lake Sharpe | Hughes | 58,419.67 acres | - |
| 4 | Lewis and Clark Lake | Bon Homme | 25,141.99 acres | - |
| 5 | Lake Thompson | Kingsbury | 13,887.93 acres | - |
All 533 South Dakota lakes ranked by surface area
Sources: USGS National Hydrography Dataset (The National Map) lake data (ID 125124650). Verified October 30, 2026.