Lakes / Illinois / Effingham County
Lakes in Effingham County, Illinois
3 lakes counted in Effingham County - the largest is Lake Sara at 553.02 acres.
3
Lakes Counted
553.02 acres
Largest - Lake Sara
Effingham County, highlighted, with its largest counted lakes dotted. Outlines from Census boundary data.
All Counted Lakes
| # | Lake | County | Surface Area | Max Depth |
|---|---|---|---|---|
| 1 | Lake Sara | Effingham | 553.02 acres | - |
| 2 | Altamont Reservoir | Effingham | 42.26 acres | - |
| 3 | Lake Pauline | Effingham | 34.1 acres | - |
Sources: USGS National Hydrography Dataset lake data; USGS. Verified October 30, 2026.