Is Spring Fork Lake Safe for Swimming?
Spring Fork Lake in Pettis County, Wisconsin has a water quality grade of F (Very Poor). Avoid swimming, very poor water quality, potential algae toxins. Water clarity: 1.4 ft visibility. Phosphorus: 160 µg/L. Chlorophyll-a (algae): 48.6 µg/L. Always check local health department advisories before swimming.
Key Metrics
| Metric | Value |
|---|---|
| Overall Grade | F (Very Poor) |
| Water Clarity (Secchi Depth) | 1.4 ft |
| Phosphorus | 160 μg/L |
| Chlorophyll-a (Algae) | 48.6 μg/L |
| Location | Pettis County, Wisconsin |
How does Spring Fork Lake compare?
With an overall water quality grade of F, Spring Fork Lake falls below the Wisconsin state average of Grade C. It ranks #1 of 1 lakes in Pettis County by water quality score.
Water clarity (Secchi depth) sits at 1.4 feet. That signals heavy algae or sediment, often tied to high phosphorus from runoff. Algae levels (chlorophyll-a) measure 48.6 µg/L — elevated; risk of harmful algal bloom advisories increases at this concentration.