Is Lake 35 Safe for Swimming?
Lake 35 in St. Charles County, Wisconsin has a water quality grade of D (Poor). Swimming not recommended, poor water quality with high algae risk. Water clarity: 2.7 ft visibility. Chlorophyll-a (algae): 24.5 µg/L. Always check local health department advisories before swimming.
Key Metrics
| Metric | Value |
|---|---|
| Overall Grade | D (Poor) |
| Water Clarity (Secchi Depth) | 2.7 ft |
| Chlorophyll-a (Algae) | 24.5 μg/L |
| Location | St. Charles County, Wisconsin |
How does Lake 35 compare?
With an overall water quality grade of D, Lake 35 falls below the Wisconsin state average of Grade C. It ranks #8 of 11 lakes in St. Charles County by water quality score.
Water clarity (Secchi depth) sits at 2.7 feet. That signals heavy algae or sediment, often tied to high phosphorus from runoff. Algae levels (chlorophyll-a) measure 24.5 µg/L — elevated; risk of harmful algal bloom advisories increases at this concentration.