Is Lake Thompson Safe for Swimming?
Lake Thompson in Oneida County, Wisconsin has a water quality grade of B (Good). Good for swimming, clear water with low algae levels. Water clarity: 13.1 ft visibility. Phosphorus: 22.4 µg/L. Always check local health department advisories before swimming.
Key Metrics
| Metric | Value |
|---|---|
| Overall Grade | B (Good) |
| Water Clarity (Secchi Depth) | 13.1 ft |
| Phosphorus | 22.4 μg/L |
| Maximum Depth | 30 ft |
| Location | Oneida County, Wisconsin |
How does Lake Thompson compare?
With an overall water quality grade of B, Lake Thompson matches or beats the Wisconsin state average of Grade B. It ranks #108 of 140 lakes in Oneida County by water quality score.
Water clarity (Secchi depth) sits at 13.1 feet. That counts as exceptional clarity — sunlight penetrates deep, supporting submerged plants and limiting algae.