Cleanest Lakes in Douglas County, Minnesota
Ida Lake in Douglas County leads the rankings with a water quality grade of A and 16.4 ft of clarity. Below are the top 40 cleanest monitored lakes in Douglas County, Minnesota, ranked by EPA water quality score.
Ranked List
| # | Lake | County | Grade | Clarity | Phosphorus | Algae |
|---|---|---|---|---|---|---|
| 1 | Ida Lake | Douglas | A | 16.4 ft | 14 µg/L | - |
| 2 | Latoka Lake | Douglas | A | 19 ft | 11 µg/L | - |
| 3 | Cowdry Lake | Douglas | A | 17.1 ft | 15 µg/L | - |
| 4 | Miltona Lake | Douglas | A | 18.7 ft | 18 µg/L | - |
| 5 | Moon Lake | Douglas | A | 21 ft | 11 µg/L | - |
| 6 | Lottie Lake | Douglas | A | 16.1 ft | 15.5 µg/L | - |
| 7 | Carlos Lake | Douglas | A | 18 ft | 13 µg/L | - |
| 8 | Stoney Lake | Douglas | A | 19 ft | 13 µg/L | - |
| 9 | North Union Lake | Douglas | A | 20.3 ft | 13.5 µg/L | - |
| 10 | Chippewa Lake | Douglas | A | 14.8 ft | 14 µg/L | - |
| 11 | Vermont Lake | Douglas | A | 14.1 ft | 12.5 µg/L | - |
| 12 | Maple Lake | Douglas | A | 14.1 ft | 15 µg/L | - |
| 13 | Darling Lake | Douglas | A | 14 ft | 19 µg/L | - |
| 14 | Andrew Lake | Douglas | A | 13.9 ft | 17 µg/L | - |
| 15 | Brophy Lake | Douglas | A | 15.4 ft | 21 µg/L | - |
| 16 | Burgen Lake | Douglas | A | 12 ft | 15 µg/L | - |
| 17 | South Oscar Lake | Douglas | A | 16.7 ft | 20 µg/L | - |
| 18 | Louise Lake | Douglas | A | 14.5 ft | 15 µg/L | - |
| 19 | Blackwell Lake | Douglas | A | 11.5 ft | 15 µg/L | - |
| 20 | Lobster Lake | Douglas | B | 13 ft | 20.5 µg/L | - |
| 21 | Crooked Lake | Douglas | B | 14 ft | 20 µg/L | - |
| 22 | Mill Lake | Douglas | B | 11 ft | 24 µg/L | - |
| 23 | Mary Lake | Douglas | B | 10.5 ft | 20 µg/L | - |
| 24 | Le Homme Dieu Lake | Douglas | B | 13.1 ft | 21 µg/L | - |
| 25 | Victoria Lake | Douglas | B | 10.2 ft | 21 µg/L | - |
| 26 | Geneva Lake | Douglas | B | 14.1 ft | 21.5 µg/L | - |
| 27 | Irene Lake | Douglas | B | 9.8 ft | 23.5 µg/L | - |
| 28 | Rachel Lake | Douglas | B | 7.9 ft | 22.5 µg/L | - |
| 29 | Pocket Lake | Douglas | B | 8.5 ft | 25 µg/L | - |
| 30 | Jessie Lake | Douglas | C | 6.8 ft | 41 µg/L | - |
| 31 | Henry Lake | Douglas | C | 5.9 ft | 25 µg/L | - |
| 32 | Red Rock Lake | Douglas | C | 3.6 ft | 55 µg/L | - |
| 33 | Wolf Lake | Douglas | C | 3.6 ft | 44 µg/L | - |
| 34 | Smith Lake | Douglas | C | 3.6 ft | 58 µg/L | - |
| 35 | Agnes Lake | Douglas | C | 5.4 ft | 37.5 µg/L | - |
| 36 | Freeborn Lake | Douglas | C | 4.6 ft | 35 µg/L | - |
| 37 | Kensington Rearing Pond | Douglas | D | 1.3 ft | 42 µg/L | - |
| 38 | Winona Lake | Douglas | D | 2 ft | 88 µg/L | - |
| 39 | St. Louis Bay Lake | Douglas | D | 1.3 ft | 71 µg/L | - |
| 40 | Stowe Lake | Douglas | F | 2.6 ft | 94 µg/L | - |