How Clean Is Custer Mine Pond?
Custer Mine Pond has fair water quality — typical of lakes with moderate nutrient enrichment. It received a water quality grade of C (Fair) based on EPA monitoring data. Water clarity (Secchi depth): 2.2 ft. Chlorophyll-a (algae): 3.3 µg/L. Trophic State Index: 54.
Cleanliness Snapshot
| Metric | Custer Mine Pond | Wisconsin avg |
|---|---|---|
| Overall Grade | C | C |
| Water Clarity (Secchi) | 2.2 ft | — |
| Chlorophyll-a (Algae) | 3.3 µg/L | <10 = clean |
| Trophic State Index | 54 | <50 = clean |
How does Custer Mine Pond compare?
Custer Mine Pond's grade of C matches or beats the Wisconsin state average of C. It ranks #3 of 3 lakes in McLean County by water quality score.