Is Long Lake Safe for Swimming?
Long Lake in Fond du Lac County, Wisconsin has a water quality grade of B (Good). Good for swimming, clear water with low algae levels. Water clarity: 9.1 ft visibility. Phosphorus: 19.3 µg/L. Always check local health department advisories before swimming.
Key Metrics
| Metric | Value |
|---|---|
| Overall Grade | B (Good) |
| Water Clarity (Secchi Depth) | 9.1 ft |
| Phosphorus | 19.3 μg/L |
| Location | Fond du Lac County, Wisconsin |
How does Long Lake compare?
With an overall water quality grade of B, Long Lake matches or beats the Wisconsin state average of Grade C. It ranks #4 of 10 lakes in Fond du Lac County by water quality score.
Water clarity (Secchi depth) sits at 9.1 feet. That puts the lake in good clarity range, with limited algae interference.