Is Lake Serene Safe for Swimming?
Lake Serene in Franklin County, Wisconsin has a water quality grade of D (Poor). Swimming not recommended, poor water quality with high algae risk. Water clarity: 2.6 ft visibility. Phosphorus: 39.5 µg/L. Chlorophyll-a (algae): 13.6 µg/L. Always check local health department advisories before swimming.
Key Metrics
| Metric | Value |
|---|---|
| Overall Grade | D (Poor) |
| Water Clarity (Secchi Depth) | 2.6 ft |
| Phosphorus | 39.5 μg/L |
| Chlorophyll-a (Algae) | 13.6 μg/L |
| Location | Franklin County, Wisconsin |
How does Lake Serene compare?
With an overall water quality grade of D, Lake Serene falls below the Wisconsin state average of Grade C. It ranks #4 of 5 lakes in Franklin County by water quality score.
Water clarity (Secchi depth) sits at 2.6 feet. That signals heavy algae or sediment, often tied to high phosphorus from runoff. Algae levels (chlorophyll-a) measure 13.6 µg/L — moderate; acceptable for swimming on most days, but worth checking advisories.