Lakes / South Dakota / Walworth County
Lakes in Walworth County, South Dakota
4 lakes counted in Walworth County - the largest is Swan Lake at 2,467.35 acres.
4
Lakes Counted
2,467.35 acres
Largest - Swan Lake
Walworth County, highlighted, with its largest counted lakes dotted. Outlines from Census boundary data.
All Counted Lakes
| # | Lake | County | Surface Area | Max Depth |
|---|---|---|---|---|
| 1 | Swan Lake | Walworth | 2,467.35 acres | - |
| 2 | Spring Lake | Walworth | 677.81 acres | - |
| 3 | Molstad Lake | Walworth | 107.74 acres | - |
| 4 | Horseshoe Lake | Walworth | 66.22 acres | - |
Sources: USGS National Hydrography Dataset lake data; USGS. Verified October 30, 2026.