Is Tappan Lake Safe for Swimming?
Tappan Lake in Harrison County, Wisconsin has a water quality grade of F (Very Poor). Avoid swimming, very poor water quality, potential algae toxins. Water clarity: 1.8 ft visibility. Always check local health department advisories before swimming.
Key Metrics
| Metric | Value |
|---|---|
| Overall Grade | F (Very Poor) |
| Water Clarity (Secchi Depth) | 1.8 ft |
| Location | Harrison County, Wisconsin |
How does Tappan Lake compare?
With an overall water quality grade of F, Tappan Lake falls below the Wisconsin state average of Grade D. It ranks #2 of 2 lakes in Harrison County by water quality score.
Water clarity (Secchi depth) sits at 1.8 feet. That signals heavy algae or sediment, often tied to high phosphorus from runoff.