Lakes / South Dakota / Union County
Lakes in Union County, South Dakota
3 lakes counted in Union County - the largest is McCook Lake at 190.77 acres.
3
Lakes Counted
190.77 acres
Largest - McCook Lake
Union County, highlighted, with its largest counted lakes dotted. Outlines from Census boundary data.
All Counted Lakes
| # | Lake | County | Surface Area | Max Depth |
|---|---|---|---|---|
| 1 | McCook Lake | Union | 190.77 acres | - |
| 2 | Lake Nixon | Union | 43.74 acres | - |
| 3 | Burbank Lake | Union | 34.59 acres | - |
Sources: USGS National Hydrography Dataset lake data; USGS. Verified October 30, 2026.