Cleanest Lakes in Marion County, Illinois
Salem Lake in Marion County leads the rankings with a water quality grade of F and 1 ft of clarity. Below are the top 5 cleanest monitored lakes in Marion County, Illinois, ranked by EPA water quality score.
Ranked List
| # | Lake | County | Grade | Clarity | Phosphorus | Algae |
|---|---|---|---|---|---|---|
| 1 | Salem Lake | Marion | F | 1 ft | 234 µg/L | 77.5 µg/L |
| 2 | Lake Centralia | Marion | NR | - | - | - |
| 3 | Forbes Lake | Marion | NR | - | - | - |
| 4 | Salem Reservoir | Marion | NR | - | - | - |
| 5 | C and EI Reservoir | Marion | NR | - | - | - |
More Answers for Marion County, Illinois
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