How Clean Is Devils Lake?
Devils Lake 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): 34.9 ft. Trophic State Index: 26.
Cleanliness Snapshot
| Metric | Devils Lake | Wisconsin avg |
|---|---|---|
| Overall Grade | A | B |
| Water Clarity (Secchi) | 34.9 ft | — |
| Trophic State Index | 26 | <50 = clean |
How does Devils Lake compare?
Devils Lake's grade of A matches or beats the Wisconsin state average of B. It ranks #2 of 11 lakes in Sauk County by water quality score.