Lakes / Illinois / Clinton County
Lakes in Clinton County, Illinois
3 lakes counted in Clinton County - the largest is Carlyle Lake at 22,796.77 acres.
3
Lakes Counted
22,796.77 acres
Largest - Carlyle Lake
Clinton County, highlighted, with its largest counted lakes dotted. Outlines from Census boundary data.
All Counted Lakes
| # | Lake | County | Surface Area | Max Depth |
|---|---|---|---|---|
| 1 | Carlyle Lake | Clinton | 22,796.77 acres | - |
| 2 | Big Forked Lake | Clinton | 26.69 acres | - |
| 3 | Long Lake | Clinton | 25.45 acres | - |
Sources: USGS National Hydrography Dataset lake data; USGS. Verified October 30, 2026.