Cleanest Lakes in Douglas County, Illinois
Walnut Point State Park Lake in Douglas County leads the rankings on measured clarity and nutrients. Below are the top 2 cleanest monitored lakes in Douglas County, Illinois, ranked on EPA nutrient and algae measurements.
Ranked List
| # | Lake | County | Clarity | Phosphorus | Algae |
|---|---|---|---|---|---|
| 1 | Walnut Point State Park Lake | Douglas | - | - | - |
| 2 | National Petroleum Chemical Company Plant Reservoir | Douglas | - | - | - |
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