Is Thunder Lake Safe for Swimming?
Thunder Lake in Oneida County, Wisconsin has a water quality grade of D (Poor). Swimming not recommended, poor water quality with high algae risk. Water clarity: 5 ft visibility. Always check local health department advisories before swimming.
Key Metrics
| Metric | Value |
|---|---|
| Overall Grade | D (Poor) |
| Water Clarity (Secchi Depth) | 5 ft |
| Maximum Depth | 9 ft |
| Location | Oneida County, Wisconsin |
How does Thunder Lake compare?
With an overall water quality grade of D, Thunder Lake falls below the Wisconsin state average of Grade C. It ranks #104 of 134 lakes in Oneida County by water quality score.
Water clarity (Secchi depth) sits at 5 feet. That falls into moderate clarity — typical for lakes with some nutrient enrichment.