How Clean Is Lake Butte des Morts?
Lake Butte des Morts has very poor water quality and a high algae bloom risk. It received a water quality grade of F (Very Poor) based on EPA monitoring data. Water clarity (Secchi depth): 2.3 ft. Trophic State Index: 65.
Cleanliness Snapshot
| Metric | Lake Butte des Morts | Wisconsin avg |
|---|---|---|
| Overall Grade | F | C |
| Water Clarity (Secchi) | 2.3 ft | — |
| Trophic State Index | 65 | <50 = clean |
How does Lake Butte des Morts compare?
Lake Butte des Morts's grade of F falls below the Wisconsin state average of C. 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.