Lakes / South Dakota / Sully County
Lakes in Sully County, South Dakota
9 lakes counted in Sully County - the largest is Stone Lake at 1,023.51 acres.
9
Lakes Counted
1,023.51 acres
Largest - Stone Lake
Sully County, highlighted, with its largest counted lakes dotted. Outlines from Census boundary data.
All Counted Lakes
| # | Lake | County | Surface Area | Max Depth |
|---|---|---|---|---|
| 1 | Stone Lake | Sully | 1,023.51 acres | - |
| 2 | Cottonwood Lake | Sully | 461.59 acres | - |
| 3 | Warnes Slough | Sully | 364.97 acres | - |
| 4 | Sully Lake | Sully | 212.26 acres | - |
| 5 | Lake Okobojo | Sully | 91.68 acres | - |
| 6 | Durrstein Lake | Sully | 83.68 acres | - |
| 7 | Walker Lake | Sully | 59.59 acres | - |
| 8 | Post Lake | Sully | 35.35 acres | - |
| 9 | Fuller Lake | Sully | 27.68 acres | - |
Sources: USGS National Hydrography Dataset lake data; USGS. Verified October 30, 2026.