Cleanest Lakes in McHenry County, Illinois
Defiance Lake in McHenry County leads the rankings with a water quality grade of NR. Below are the top 10 cleanest monitored lakes in McHenry County, Illinois, ranked by EPA water quality score.
Ranked List
| # | Lake | County | Grade | Clarity | Phosphorus | Algae |
|---|---|---|---|---|---|---|
| 1 | Defiance Lake | McHenry | NR | - | - | - |
| 2 | Pistakee Lake | McHenry | NR | - | - | - |
| 3 | McCullom Lake | McHenry | NR | - | - | - |
| 4 | Lake Killarney | McHenry | NR | - | - | - |
| 5 | Griswold Lake | McHenry | NR | - | - | - |
| 6 | Vulcan Lakes | McHenry | NR | - | - | - |
| 7 | Lake in the Hills | McHenry | NR | - | - | - |
| 8 | Crystal Lake | McHenry | NR | - | - | - |
| 9 | Wold Lake | McHenry | NR | - | - | - |
| 10 | Wonder Lake | McHenry | NR | - | - | - |
More Answers for McHenry County, Illinois
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