F
Lyon County Lake Quality
Minnesota — 5 lakes, average grade F (Very Poor)
All Lakes in Lyon County
| Rank | Lake | Grade | Clarity | Phosphorus |
|---|---|---|---|---|
| 1 | Island Lake | F | 0.6m | 123 µg/L |
| 2 | Cottonwood Lake | F | 0.54m | 186 µg/L |
| 3 | Lady Slipper Lake | F | 0.46m | — |
| 4 | School Grove Lake | F | 0.61m | — |
| 5 | Brown Marsh Lake | F | 0.5m | 98 µg/L |