Lakes / Illinois / Douglas County
Lakes in Douglas County, Illinois
2 lakes counted in Douglas County - the largest is Walnut Point State Park Lake at 56.34 acres.
2
Lakes Counted
56.34 acres
Largest - Walnut Point State Park Lake
Douglas County, highlighted, with its largest counted lakes dotted. Outlines from Census boundary data.
All Counted Lakes
| # | Lake | County | Surface Area | Max Depth |
|---|---|---|---|---|
| 1 | Walnut Point State Park Lake | Douglas | 56.34 acres | - |
| 2 | National Petroleum Chemical Company Plant Reservoir | Douglas | 25.22 acres | - |
Sources: USGS National Hydrography Dataset lake data; USGS. Verified October 30, 2026.