Lakes / South Dakota / Brookings County
Lakes in Brookings County, South Dakota
12 lakes counted in Brookings County - the largest is Lake Sinai at 1,789.59 acres.
12
Lakes Counted
1,789.59 acres
Largest - Lake Sinai
Brookings County, highlighted, with its largest counted lakes dotted. Outlines from Census boundary data.
All Counted Lakes
| # | Lake | County | Surface Area | Max Depth |
|---|---|---|---|---|
| 1 | Lake Sinai | Brookings | 1,789.59 acres | - |
| 2 | Lake Hendricks | Brookings | 1,528.59 acres | - |
| 3 | Lake Tetonkaha | Brookings | 1,126.56 acres | - |
| 4 | Lake Oakwood | Brookings | 866.35 acres | - |
| 5 | Oak Lake | Brookings | 400.8 acres | - |
| 6 | Lake Goldsmith | Brookings | 289.85 acres | - |
| 7 | Brush Lake | Brookings | 200.65 acres | - |
| 8 | Lake Mitchell | Brookings | 199.41 acres | - |
| 9 | Mortimer Slough | Brookings | 138.63 acres | - |
| 10 | Moe Slough | Brookings | 104.03 acres | - |
| 11 | Nelson Slough | Brookings | 70.43 acres | - |
| 12 | Pederson Slough | Brookings | 48.68 acres | - |
Sources: USGS National Hydrography Dataset lake data; USGS. Verified October 30, 2026.