Cleanest Lakes in Aitkin County, Minnesota
Clear Lake in Aitkin County leads the rankings with a water quality grade of A and 15 ft of clarity. Below are the top 21 cleanest monitored lakes in Aitkin County, Minnesota, ranked by EPA water quality score.
Ranked List
| # | Lake | County | Grade | Clarity | Phosphorus | Algae |
|---|---|---|---|---|---|---|
| 1 | Clear Lake | Aitkin | A | 15 ft | 15 µg/L | - |
| 2 | Big Pine Lake | Aitkin | A | 17 ft | 15 µg/L | - |
| 3 | Round Lake | Aitkin | A | 14.5 ft | 10 µg/L | - |
| 4 | Cedar Lake | Aitkin | A | 11.1 ft | 13 µg/L | - |
| 5 | Sugar Lake | Aitkin | A | 14.5 ft | 9.5 µg/L | - |
| 6 | Farm Island Lake | Aitkin | A | 11.3 ft | 17.5 µg/L | - |
| 7 | Nord Lake | Aitkin | A | 10.5 ft | 19 µg/L | - |
| 8 | Ml-Nw Lake | Aitkin | B | 9.4 ft | 24 µg/L | 5.7 µg/L |
| 9 | Ml-Ce Lake | Aitkin | B | 9 ft | 25 µg/L | 5.2 µg/L |
| 10 | Ml-Garrison Lake | Aitkin | B | 6.2 ft | 26 µg/L | 4.7 µg/L |
| 11 | Ml-Nshore Lake | Aitkin | B | 7.4 ft | 24.5 µg/L | 5.7 µg/L |
| 12 | Ml-Ne Lake | Aitkin | B | 8.6 ft | 24 µg/L | 5.4 µg/L |
| 13 | Ml-Seventeen Lake | Aitkin | C | 6.2 ft | 24.5 µg/L | 5.3 µg/L |
| 14 | Minnewawa Lake | Aitkin | C | 5 ft | 24.5 µg/L | - |
| 15 | Big Sandy Lake | Aitkin | C | 4.5 ft | 29.5 µg/L | - |
| 16 | Pine Lake | Aitkin | C | 6.5 ft | 27 µg/L | 13.5 µg/L |
| 17 | Ripple Lake | Aitkin | C | 4.5 ft | 21 µg/L | - |
| 18 | Horseshoe Lake | Aitkin | C | 3.5 ft | 40 µg/L | - |
| 19 | Flowage Lake | Aitkin | D | 2.1 ft | 55 µg/L | - |
| 20 | Porcupine Lake | Aitkin | D | 1.5 ft | 51 µg/L | - |
| 21 | Davis Lake | Aitkin | D | 1.6 ft | 75 µg/L | - |