Cleanest Lakes in Perry County, Illinois
Boulder South Lake in Perry County leads the rankings with a water quality grade of B and 8.8 ft of clarity. Below are the top 2 cleanest monitored lakes in Perry County, Illinois, ranked by EPA water quality score.
Ranked List
| # | Lake | County | Grade | Clarity | Phosphorus | Algae |
|---|---|---|---|---|---|---|
| 1 | Boulder South Lake | Perry | B | 8.8 ft | 14.5 µg/L | - |
| 2 | Wesslyn Cut Lake | Perry | D | 4.5 ft | 109 µg/L | - |