Lakes / Illinois / Marshall County / Babb Slough
Babb Slough, Illinois
1,785.21 acres
Surface Area
Where It Sits, and How Deep It Goes
Locator - Illinois
40.97 degrees N, 89.44 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 Babb Slough Stacks Up
- Larger than 95% of the 511 lakes counted in Illinois.
- The largest lake in Marshall County among those counted.
- About 20 miles from Peoria, as the crow flies.
Lakes Nearby
| Lake | County | Distance | Surface Area |
|---|---|---|---|
| Meadow Lake | Peoria | 1.2 mi | 457.14 acres |
| Wightman Lake | Marshall | 3.2 mi | 491.49 acres |
| Goose Lake | Marshall | 6.2 mi | 1,113.46 acres |
| Billsbach Lake | Marshall | 8.8 mi | 871.79 acres |
| Lake Wildwood | Marshall | 11 mi | 209.79 acres |
| Upper Peoria Lake | Woodford | 11 mi | 15,460.64 acres |
Straight-line distance between lake centers.
Facts and Figures
Questions About Babb Slough
How Big Is Babb Slough?
Babb Slough covers 1,785.21 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 152225711). Verified October 30, 2026.