Cleanest Lakes in Clark County, Illinois
Mill Creek Watershed Impoundment Reservoir in Clark County leads the rankings on measured clarity and nutrients. Below are the top 3 cleanest monitored lakes in Clark County, Illinois, ranked on EPA nutrient and algae measurements.
Ranked List
| # | Lake | County | Clarity | Phosphorus | Algae |
|---|---|---|---|---|---|
| 1 | Mill Creek Watershed Impoundment Reservoir | Clark | - | - | - |
| 2 | Mill Creek Watershed Impoundment Reservoir | Clark | - | - | - |
| 3 | Lincoln Trail State Park Lake | Clark | - | - | - |
More Answers for Clark County, Illinois
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