Lakes / Illinois / Madison County / McDonough Lake
McDonough Lake, Illinois
60.79 acres
Surface Area
Where It Sits, and How Deep It Goes
Locator - Illinois
38.71 degrees N, 90.02 degrees W - Madison 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 McDonough Lake Stacks Up
- Larger than 44% of the 511 lakes counted in Illinois.
- About 77 miles from Springfield, as the crow flies.
Lakes Nearby
| Lake | County | Distance | Surface Area |
|---|---|---|---|
| Long Lake | Madison | 3.9 mi | 62.27 acres |
| Horseshoe Lake | Madison | 4.1 mi | 1,426.29 acres |
| Canteen Lake | Madison | 4.8 mi | 96.87 acres |
| Spring Lake | St. Clair | 5.7 mi | 66.47 acres |
| Long Lake | Madison | 6.4 mi | 46.7 acres |
| Tower Lake | Madison | 6.7 mi | 71.17 acres |
Straight-line distance between lake centers.
Facts and Figures
Questions About McDonough Lake
How Big Is McDonough Lake?
McDonough Lake covers 60.79 acres in Madison County, Illinois.
What Is the Largest Lake in Madison County?
Horseshoe Lake is the largest lake in Madison County, at 1,426.29 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 79318700). Verified October 30, 2026.