Lakes / Illinois / Brown County
Lakes in Brown County, Illinois
2 lakes counted in Brown County - the largest is Big Lake at 293.56 acres.
2
Lakes Counted
293.56 acres
Largest - Big Lake
Brown County, highlighted, with its largest counted lakes dotted. Outlines from Census boundary data.
All Counted Lakes
| # | Lake | County | Surface Area | Max Depth |
|---|---|---|---|---|
| 1 | Big Lake | Brown | 293.56 acres | - |
| 2 | Hambaugh-Martin Number 1 Reservoir | Brown | 27.18 acres | - |
Sources: USGS National Hydrography Dataset lake data; USGS. Verified October 30, 2026.