Is Lake Butte des Morts Safe for Swimming?
Lake Butte des Morts in Winnebago County, Wisconsin has a water quality grade of F (Very Poor). Avoid swimming, very poor water quality, potential algae toxins. Water clarity: 2.3 ft visibility. Always check local health department advisories before swimming.
Key Metrics
| Metric | Value |
|---|---|
| Overall Grade | F (Very Poor) |
| Water Clarity (Secchi Depth) | 2.3 ft |
| Maximum Depth | 9 ft |
| Location | Winnebago County, Wisconsin |
How does Lake Butte des Morts compare?
With an overall water quality grade of F, Lake Butte des Morts falls below the Wisconsin state average of Grade C. It ranks #3 of 5 lakes in Winnebago County by water quality score.
Water clarity (Secchi depth) sits at 2.3 feet. That signals heavy algae or sediment, often tied to high phosphorus from runoff.