How Clean Is Henry Sever Lake?
Henry Sever Lake has poor water quality, with elevated phosphorus and algae. It received a water quality grade of D (Poor) based on EPA monitoring data. Water clarity (Secchi depth): 2.1 ft. Phosphorus: 58 µg/L. Chlorophyll-a (algae): 25.4 µg/L. Trophic State Index: 64.
Cleanliness Snapshot
| Metric | Henry Sever Lake | Wisconsin avg |
|---|---|---|
| Overall Grade | D | C |
| Water Clarity (Secchi) | 2.1 ft | — |
| Phosphorus | 58 µg/L | <30 = clean |
| Chlorophyll-a (Algae) | 25.4 µg/L | <10 = clean |
| Trophic State Index | 64 | <50 = clean |
How does Henry Sever Lake compare?
Henry Sever Lake's grade of D falls below the Wisconsin state average of C. It ranks #1 of 1 lakes in Knox County by water quality score.