How Clean Is Lake Butte des Morts?
Lake Butte des Morts 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): 7.6 ft. Trophic State Index: 48.
Cleanliness Snapshot
| Metric | Lake Butte des Morts | Wisconsin avg |
|---|---|---|
| Overall Grade | C | B |
| Water Clarity (Secchi) | 7.6 ft | — |
| Trophic State Index | 48 | <50 = clean |
How does Lake Butte des Morts compare?
Lake Butte des Morts's grade of C falls below the Wisconsin state average of B. It ranks #3 of 5 lakes in Winnebago County by water quality score. Multi-year monitoring data shows water quality is stable based on 5 years of records.