Cleanest Lakes in Blue Earth County, Minnesota
Madison Lake in Blue Earth County leads the rankings with a water quality grade of D and 4 ft of clarity. Below are the top 6 cleanest monitored lakes in Blue Earth County, Minnesota, ranked by EPA water quality score.
Ranked List
| # | Lake | County | Grade | Clarity | Phosphorus | Algae |
|---|---|---|---|---|---|---|
| 1 | Madison Lake | Blue Earth | D | 4 ft | 78 µg/L | - |
| 2 | Ballantyne Lake | Blue Earth | D | 2.5 ft | 79 µg/L | - |
| 3 | Porter Lake | Blue Earth | D | 1.3 ft | 83 µg/L | - |
| 4 | George Lake | Blue Earth | F | 2.2 ft | 127 µg/L | - |
| 5 | Crystal Lake | Blue Earth | F | 1.5 ft | 172 µg/L | - |
| 6 | Duck Lake | Blue Earth | F | 2.8 ft | 105 µg/L | - |