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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

#LakeCountySurface AreaMax Depth
1Big LakeBrown293.56 acres-
2Hambaugh-Martin Number 1 ReservoirBrown27.18 acres-
Find a Lake in Brown CountyLargest Lakes
Sources: USGS National Hydrography Dataset lake data; USGS. Verified October 30, 2026.