Lakes / South Dakota / Yankton County
Lakes in Yankton County, South Dakota
3 lakes counted in Yankton County - the largest is Lake Yankton at 322.23 acres.
3
Lakes Counted
322.23 acres
Largest - Lake Yankton
Yankton County, highlighted, with its largest counted lakes dotted. Outlines from Census boundary data.
All Counted Lakes
| # | Lake | County | Surface Area | Max Depth |
|---|---|---|---|---|
| 1 | Lake Yankton | Yankton | 322.23 acres | - |
| 2 | Beaver Lake | Yankton | 125.78 acres | - |
| 3 | Marindahl Lake | Yankton | 106.5 acres | - |
Sources: USGS National Hydrography Dataset lake data; USGS. Verified October 30, 2026.