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Lakes / Illinois / Hamilton County

Lakes in Hamilton County, Illinois

2 lakes counted in Hamilton County - the largest is L P Dolan Lake at 72.34 acres.

2
Lakes Counted
72.34 acres
Largest - L P Dolan Lake

Hamilton County, highlighted, with its largest counted lakes dotted. Outlines from Census boundary data.

All Counted Lakes

#LakeCountySurface AreaMax Depth
1L P Dolan LakeHamilton72.34 acres-
2Lake McLeansboroHamilton57.16 acres-
Find a Lake in Hamilton CountyLargest Lakes
Sources: USGS National Hydrography Dataset lake data; USGS. Verified October 30, 2026.