Cleanest Lakes in Marion County, Illinois
Kinmundy New Lake in Marion County leads the rankings with a water quality grade of D and 2.9 ft of clarity. Below are the top 6 cleanest monitored lakes in Marion County, Illinois, ranked by EPA water quality score.
Ranked List
| # | Lake | County | Grade | Clarity | Phosphorus | Algae |
|---|---|---|---|---|---|---|
| 1 | Kinmundy New Lake | Marion | D | 2.9 ft | 36.5 µg/L | - |
| 2 | Forbes Lake | Marion | D | 1.4 ft | 74 µg/L | - |
| 3 | Centralia Lake | Marion | D | 1.5 ft | 86.5 µg/L | - |
| 4 | Salem Lake | Marion | F | 1 ft | 197 µg/L | - |
| 5 | Raccoon Lake | Marion | F | 1.2 ft | 202.5 µg/L | - |
| 6 | Kinmundy Old Lake | Marion | F | 1.5 ft | 212.5 µg/L | - |