F
Big Stone County Lake Quality
Minnesota — 13 lakes, average grade F (Very Poor)
All Lakes in Big Stone County
| Rank | Lake | Grade | Clarity | Phosphorus |
|---|---|---|---|---|
| 1 | Unnamed Lake | D | 2.1m | 167.5 µg/L |
| 2 | Cup Lake | D | 1.55m | — |
| 3 | 06-0422-00-100 Lake | D | 0.8m | 43 µg/L |
| 4 | Big Stone Lake | D | 1.2m | 151 µg/L |
| 5 | Big Stone Lake | D | 1.5m | 196 µg/L |
| 6 | Big Stone Lake | D | 1.5m | 292 µg/L |
| 7 | Unnamed Lake | F | 0.3m | 237 µg/L |
| 8 | Unnamed Lake | F | 0.9m | 800 µg/L |
| 9 | Big Stone Lake | F | 0.8m | 243 µg/L |
| 10 | East Toqua Lake | F | 0.5m | 720 µg/L |
| 11 | Otrey Lake | F | 0.3m | 431 µg/L |
| 12 | Barry Lake | F | 0.25m | 348 µg/L |
| 13 | Olson Lake | F | 0.2m | 782 µg/L |