Cleanest Lakes in Marinette County, Wisconsin
Thunder Lake in Marinette County leads the rankings with a water quality grade of A and 18 ft of clarity. Below are the top 12 cleanest monitored lakes in Marinette County, Wisconsin, ranked by EPA water quality score.
Ranked List
| # | Lake | County | Grade | Clarity | Phosphorus | Algae |
|---|---|---|---|---|---|---|
| 1 | Thunder Lake | Marinette | A | 18 ft | 10.3 µg/L | - |
| 2 | Gilas Lake | Marinette | A | 15 ft | 12.6 µg/L | - |
| 3 | Big Newton Lake | Marinette | A | 17 ft | 10.4 µg/L | - |
| 4 | Little Newton Lake | Marinette | A | 10.5 ft | 12.8 µg/L | - |
| 5 | Hilbert Lake | Marinette | A | 12 ft | 13.1 µg/L | - |
| 6 | Lake Noquebay | Marinette | B | 7.3 ft | 19.4 µg/L | - |
| 7 | Mary Lake | Marinette | B | 9 ft | 13.5 µg/L | - |
| 8 | Town Corner Lake | Marinette | B | 9.7 ft | 15 µg/L | - |
| 9 | Shannon Lake | Marinette | B | 7.5 ft | 18.5 µg/L | - |
| 10 | Oneonta Lake | Marinette | B | 7.5 ft | 13.6 µg/L | - |
| 11 | Montana Lake | Marinette | B | 8 ft | 17.5 µg/L | - |
| 12 | Yankee Lake | Marinette | C | 3 ft | 26.5 µg/L | - |