How Clean Is Crystal Lake?
Crystal Lake is a clean lake by Wisconsin standards. It received a water quality grade of B (Good) based on EPA monitoring data. Water clarity (Secchi depth): 9.5 ft. Chlorophyll-a (algae): 4 µg/L. Trophic State Index: 44.
Cleanliness Snapshot
| Metric | Crystal Lake | Wisconsin avg |
|---|---|---|
| Overall Grade | B | B |
| Water Clarity (Secchi) | 9.5 ft | — |
| Chlorophyll-a (Algae) | 4 µg/L | <10 = clean |
| Trophic State Index | 44 | <50 = clean |
How does Crystal Lake compare?
Crystal Lake's grade of B matches or beats the Wisconsin state average of B. It ranks #1 of 7 lakes in Hillsdale County by water quality score.