D
Blue Earth County Lake Quality
Minnesota — 9 lakes, average grade D (Poor)
All Lakes in Blue Earth County
| Rank | Lake | Grade | Clarity | Phosphorus |
|---|---|---|---|---|
| 1 | Unnamed Lake | B | — | 21 µg/L |
| 2 | Madison Lake | D | 1.09m | 75 µg/L |
| 3 | Porter Lake | D | 0.4m | 83 µg/L |
| 4 | Ballantyne Lake | F | 0.76m | 91 µg/L |
| 5 | George Lake | F | 0.75m | 120 µg/L |
| 6 | Crystal Lake | F | 0.46m | 172 µg/L |
| 7 | Duck Lake | F | 0.86m | 105 µg/L |
| 8 | Loon Lake | F | 0.61m | — |
| 9 | Eagle Lake | F | 0.3m | — |