Lakes / Illinois / Douglas County / Walnut Point State Park Lake
Walnut Point State Park Lake, Illinois
56.34 acres
Surface Area
Where It Sits, and How Deep It Goes
Locator - Illinois
39.70 degrees N, 88.03 degrees W - Douglas County. State and county outlines drawn from Census boundary data; the lake marker is placed by its USGS National Hydrography Dataset coordinates, not by eye. Schematic - not a survey map.
How Walnut Point State Park Lake Stacks Up
- Larger than 41% of the 511 lakes counted in Illinois.
- The largest lake in Douglas County among those counted.
- About 86 miles from Springfield, as the crow flies.
Lakes Nearby
| Lake | County | Distance | Surface Area |
|---|---|---|---|
| Lake Oakland | Coles | 2.5 mi | 32.87 acres |
| Lake Charleston | Coles | 17 mi | 335.57 acres |
| National Petroleum Chemical Company Plant Reservoir | Douglas | 19 mi | 25.22 acres |
| Twin Lakes | Edgar | 19 mi | 163.09 acres |
| Homer Lake | Champaign | 26 mi | 81.67 acres |
| Lake Paradise | Coles | 29 mi | 173.96 acres |
Straight-line distance between lake centers.
Facts and Figures
Largest Lakes in Illinois
| # | Lake | County | Surface Area | Max Depth |
|---|---|---|---|---|
| 1 | Carlyle Lake | Clinton | 22,796.77 acres | - |
| 2 | Mine Number 21 Reservoir | Franklin | 17,062.04 acres | - |
| 3 | Upper Peoria Lake | Woodford | 15,460.64 acres | - |
| 4 | Lake Shelbyville | Shelby | 10,235.1 acres | - |
| 5 | Crab Orchard Lake | Williamson | 7,292.57 acres | - |
All 511 Illinois lakes ranked by surface area
Sources: USGS National Hydrography Dataset (The National Map) lake data (ID 155207376). Verified October 30, 2026.