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Lakes / Illinois / Rock Island County

Lakes in Rock Island County, Illinois

2 lakes counted in Rock Island County - the largest is Lake George at 150.73 acres.

2
Lakes Counted
150.73 acres
Largest - Lake George

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

All Counted Lakes

#LakeCountySurface AreaMax Depth
1Lake GeorgeRock Island150.73 acres-
2Bowles SloughRock Island37.56 acres-
Find a Lake in Rock Island CountyLargest Lakes
Sources: USGS National Hydrography Dataset lake data; USGS. Verified October 30, 2026.