How Clean Is Lake Beulah?
Lake Beulah has fair water quality — typical of lakes with moderate nutrient enrichment. It received a water quality grade of C (Fair) based on EPA monitoring data. Water clarity (Secchi depth): 2.6 ft. Phosphorus: 18 µg/L. Trophic State Index: 55.
Cleanliness Snapshot
| Metric | Lake Beulah | Wisconsin avg |
|---|---|---|
| Overall Grade | C | C |
| Water Clarity (Secchi) | 2.6 ft | — |
| Phosphorus | 18 µg/L | <30 = clean |
| Trophic State Index | 55 | <50 = clean |
How does Lake Beulah compare?
Lake Beulah's grade of C matches or beats the Wisconsin state average of C. It ranks #23 of 35 lakes in Walworth County by water quality score. Multi-year monitoring data shows water quality is improving based on 6 years of records.