Cleanest Lakes in Randolph County, Illinois
Randolph Lake in Randolph County leads the rankings with a water quality grade of D and 1.7 ft of clarity. Below are the top 3 cleanest monitored lakes in Randolph County, Illinois, ranked by EPA water quality score.
Ranked List
| # | Lake | County | Grade | Clarity | Phosphorus | Algae |
|---|---|---|---|---|---|---|
| 1 | Randolph Lake | Randolph | D | 1.7 ft | 49 µg/L | - |
| 2 | Sparta Northwest Lake | Randolph | D | 2.6 ft | 34 µg/L | - |
| 3 | Coulterville Lake | Randolph | F | 2.7 ft | 426 µg/L | - |