How Clean Is Sleepy Hollow Lake?
Sleepy Hollow 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): 5.9 ft. Trophic State Index: 52.
Cleanliness Snapshot
| Metric | Sleepy Hollow Lake | Wisconsin avg |
|---|---|---|
| Overall Grade | D | B |
| Water Clarity (Secchi) | 5.9 ft | — |
| Trophic State Index | 52 | <50 = clean |
How does Sleepy Hollow Lake compare?
Sleepy Hollow Lake's grade of D falls below the Wisconsin state average of B. It ranks #1 of 1 lakes in Greene County by water quality score.