Lakes / South Dakota / Grant County / Twin Lakes
Twin Lakes, Grant County, South Dakota
156.42 acres
Surface Area
Where It Sits, and How Deep It Goes
Locator - South Dakota
45.26 degrees N, 97.00 degrees W - Grant 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 55% of the 533 lakes counted in South Dakota.
- About 25 miles from Watertown, as the crow flies.
Lakes Nearby
| Lake | County | Distance | Surface Area |
|---|---|---|---|
| Summit Lake | Grant | 1.9 mi | 170.26 acres |
| Myers Lake | Grant | 5.4 mi | 132.45 acres |
| Mollie Lake | Roberts | 8.2 mi | 37.56 acres |
| Pearson Slough | Roberts | 9.7 mi | 84.51 acres |
| Punished Womans Lake | Codington | 10 mi | 485.56 acres |
| Round Lake | Codington | 11 mi | 157.9 acres |
Straight-line distance between lake centers.
Facts and Figures
Questions About Twin Lakes
How Big Is Twin Lakes?
Twin Lakes covers 156.42 acres in Grant County, South Dakota.
What Is the Largest Lake in Grant County?
Crooked Lake is the largest lake in Grant County, at 400.8 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 122548961). Verified October 30, 2026.