How Clean Is Lake Beulah?
Lake Beulah 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): 11 ft. Phosphorus: 13 µg/L. Trophic State Index: 42.
Cleanliness Snapshot
| Metric | Lake Beulah | Wisconsin avg |
|---|---|---|
| Overall Grade | A | B |
| Water Clarity (Secchi) | 11 ft | — |
| Phosphorus | 13 µg/L | <30 = clean |
| Trophic State Index | 42 | <50 = clean |
How does Lake Beulah compare?
Lake Beulah's grade of A matches or beats the Wisconsin state average of B. It ranks #18 of 34 lakes in Walworth County by water quality score. Multi-year monitoring data shows water quality is improving based on 7 years of records.