Lakes / Illinois / McHenry County
Lakes in McHenry County, Illinois
12 lakes counted in McHenry County - the largest is Pistakee Lake at 1,743.58 acres.
12
Lakes Counted
1,743.58 acres
Largest - Pistakee Lake
McHenry County, highlighted, with its largest counted lakes dotted. Outlines from Census boundary data.
All Counted Lakes
| # | Lake | County | Surface Area | Max Depth |
|---|---|---|---|---|
| 1 | Pistakee Lake | McHenry | 1,743.58 acres | - |
| 2 | Wonder Lake | McHenry | 697.58 acres | - |
| 3 | Vulcan Lakes | McHenry | 275.77 acres | - |
| 4 | McCullom Lake | McHenry | 241.92 acres | - |
| 5 | Crystal Lake | McHenry | 230.06 acres | - |
| 6 | Griswold Lake | McHenry | 153.45 acres | - |
| 7 | Lily Lake | McHenry | 95.88 acres | - |
| 8 | Defiance Lake | McHenry | 66.22 acres | - |
| 9 | Wold Lake | McHenry | 65.24 acres | - |
| 10 | Lake Killarney | McHenry | 59.55 acres | - |
| 11 | Lake in the Hills | McHenry | 54.36 acres | - |
| 12 | Silver Lake | McHenry | 43.74 acres | - |
Sources: USGS National Hydrography Dataset lake data; USGS. Verified October 30, 2026.