Cleanest Lakes in Big Stone County, Minnesota
Unnamed Lake in Big Stone County leads the rankings with a water quality grade of D and 6.9 ft of clarity. Below are the top 8 cleanest monitored lakes in Big Stone County, Minnesota, ranked by EPA water quality score.
Ranked List
| # | Lake | County | Grade | Clarity | Phosphorus | Algae |
|---|---|---|---|---|---|---|
| 1 | Unnamed Lake | Big Stone | D | 6.9 ft | 167.5 µg/L | - |
| 2 | 06-0422-00 Lake | Big Stone | D | 2.6 ft | 43 µg/L | - |
| 3 | Big Stone Lake | Big Stone | D | 3.9 ft | 217 µg/L | - |
| 4 | Unnamed Lake | Big Stone | F | 2 ft | 518.5 µg/L | - |
| 5 | East Toqua Lake | Big Stone | F | 1.6 ft | 720 µg/L | - |
| 6 | Otrey Lake | Big Stone | F | 1 ft | 431 µg/L | - |
| 7 | Barry Lake | Big Stone | F | 0.8 ft | 348 µg/L | - |
| 8 | Olson Lake | Big Stone | F | 0.7 ft | 782 µg/L | - |