Lakes / Illinois / Marshall County / Wightman Lake
Wightman Lake, Illinois
491.49 acres
Surface Area
Where It Sits, and How Deep It Goes
Locator - Illinois
41.01 degrees N, 89.43 degrees W - Marshall 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 Wightman Lake Stacks Up
- Larger than 86% of the 511 lakes counted in Illinois.
- About 23 miles from Peoria, as the crow flies.
Lakes Nearby
| Lake | County | Distance | Surface Area |
|---|---|---|---|
| Goose Lake | Marshall | 3.1 mi | 1,113.46 acres |
| Babb Slough | Marshall | 3.2 mi | 1,785.21 acres |
| Meadow Lake | Peoria | 3.8 mi | 457.14 acres |
| Billsbach Lake | Marshall | 6.0 mi | 871.79 acres |
| Lake Wildwood | Marshall | 8.9 mi | 209.79 acres |
| Sawmill Lake | Putnam | 9.4 mi | 556.48 acres |
Straight-line distance between lake centers.
Facts and Figures
Questions About Wightman Lake
How Big Is Wightman Lake?
Wightman Lake covers 491.49 acres in Marshall County, Illinois.
What Is the Largest Lake in Marshall County?
Babb Slough is the largest lake in Marshall County, at 1,785.21 acres.
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 152225622). Verified October 30, 2026.