How Clean Is Cottontail Lake?
Cottontail Lake has very poor water quality and a high algae bloom risk. It received a water quality grade of F (Very Poor) based on EPA monitoring data. Water clarity (Secchi depth): 1.6 ft. Phosphorus: 86.5 µg/L. Chlorophyll-a (algae): 39.4 µg/L. Trophic State Index: 68.
Cleanliness Snapshot
| Metric | Cottontail Lake | Wisconsin avg |
|---|---|---|
| Overall Grade | F | C |
| Water Clarity (Secchi) | 1.6 ft | — |
| Phosphorus | 86.5 µg/L | <30 = clean |
| Chlorophyll-a (Algae) | 39.4 µg/L | <10 = clean |
| Trophic State Index | 68 | <50 = clean |
How does Cottontail Lake compare?
Cottontail Lake's grade of F falls below the Wisconsin state average of C. It ranks #12 of 27 lakes in Jackson County by water quality score.