Cleanest Lakes in Carlton County, Minnesota
Big Lake in Carlton County leads the rankings with a water quality grade of B and 9.1 ft of clarity. Below are the top 21 cleanest monitored lakes in Carlton County, Minnesota, ranked by EPA water quality score.
Ranked List
| # | Lake | County | Grade | Clarity | Phosphorus | Algae |
|---|---|---|---|---|---|---|
| 1 | Big Lake | Carlton | B | 9.1 ft | 12 µg/L | 3.2 µg/L |
| 2 | Third Lake | Carlton | B | 8.5 ft | 13.5 µg/L | 2.3 µg/L |
| 3 | Pat Martin Lake | Carlton | B | 6.6 ft | 15 µg/L | 3.5 µg/L |
| 4 | Lac Lake | Carlton | B | 9.5 ft | 15.5 µg/L | 5.5 µg/L |
| 5 | Park Lake | Carlton | B | 7 ft | 14 µg/L | - |
| 6 | Sofie Lake | Carlton | B | 4.9 ft | 20.5 µg/L | 3.9 µg/L |
| 7 | Wild Rice Lake | Carlton | C | 3.2 ft | 21 µg/L | 2.8 µg/L |
| 8 | Spruce Lake | Carlton | C | 2.3 ft | 19 µg/L | 9.1 µg/L |
| 9 | Hardwood Lake | Carlton | C | 5.1 ft | 20 µg/L | 5.1 µg/L |
| 10 | Rice Portage Lake | Carlton | C | 1.3 ft | 29.5 µg/L | 4.9 µg/L |
| 11 | Eagle Lake | Carlton | C | 7 ft | 34 µg/L | - |
| 12 | Sand Lake | Carlton | C | 5 ft | 29 µg/L | - |
| 13 | Perch Lake | Carlton | C | 2.2 ft | 25 µg/L | 6.1 µg/L |
| 14 | Miller Lake | Carlton | C | 1.8 ft | 32 µg/L | 1.6 µg/L |
| 15 | Deadfish Lake | Carlton | C | 1.6 ft | 48.5 µg/L | 3.6 µg/L |
| 16 | Hay Lake | Carlton | C | 6 ft | 24 µg/L | - |
| 17 | Jaskari Lake | Carlton | C | 2.4 ft | 25 µg/L | 10.3 µg/L |
| 18 | Bang Lake | Carlton | C | 2 ft | 43 µg/L | 9.4 µg/L |
| 19 | Island Lake | Carlton | C | 5 ft | 45.5 µg/L | - |
| 20 | Cedar Lake | Carlton | D | 2 ft | 40 µg/L | 10 µg/L |
| 21 | Second Lake | Carlton | D | 1.2 ft | 78.5 µg/L | 13 µg/L |