Cleanest Lakes in Marathon County, Wisconsin
Big Bass Lake in Marathon County leads the rankings with a water quality grade of A and 19.7 ft of clarity. Below are the top 4 cleanest monitored lakes in Marathon County, Wisconsin, ranked by EPA water quality score.
Ranked List
| # | Lake | County | Grade | Clarity | Phosphorus | Algae |
|---|---|---|---|---|---|---|
| 1 | Big Bass Lake | Marathon | A | 19.7 ft | 19 µg/L | - |
| 2 | Pike Lake | Marathon | A | 16.4 ft | 29.3 µg/L | - |
| 3 | Lake Dubay | Marathon | C | 8.2 ft | 63.6 µg/L | - |
| 4 | Big Eau Pleine Lake | Marathon | F | 3.3 ft | 131 µg/L | - |