Lakes / Illinois / Menard County
Lakes in Menard County, Illinois
1 lakes counted in Menard County - the largest is Lake Petersburg at 177.42 acres.
1
Lakes Counted
177.42 acres
Largest - Lake Petersburg
Menard County, highlighted, with its largest counted lakes dotted. Outlines from Census boundary data.
All Counted Lakes
| # | Lake | County | Surface Area | Max Depth |
|---|---|---|---|---|
| 1 | Lake Petersburg | Menard | 177.42 acres | - |
Sources: USGS National Hydrography Dataset lake data; USGS. Verified October 30, 2026.