How Clean Is Deruyter Reservoir?
Deruyter Reservoir is among the cleanest lakes in Wisconsin. It received a water quality grade of A (Excellent) based on EPA monitoring data. Water clarity (Secchi depth): 17.6 ft. Trophic State Index: 36.
Cleanliness Snapshot
| Metric | Deruyter Reservoir | Wisconsin avg |
|---|---|---|
| Overall Grade | A | B |
| Water Clarity (Secchi) | 17.6 ft | — |
| Trophic State Index | 36 | <50 = clean |
How does Deruyter Reservoir compare?
Deruyter Reservoir's grade of A matches or beats the Wisconsin state average of B. It ranks #2 of 8 lakes in Madison County by water quality score.