Is Blue Lake Safe for Swimming?
Blue Lake in Oneida County, Wisconsin has a water quality grade of A (Excellent). Excellent for swimming, crystal clear water with minimal algae. Water clarity: 73.8 ft visibility. Phosphorus: 10.5 µg/L. Always check local health department advisories before swimming.
Key Metrics
| Metric | Value |
|---|---|
| Overall Grade | A (Excellent) |
| Water Clarity (Secchi Depth) | 73.8 ft |
| Phosphorus | 10.5 μg/L |
| Maximum Depth | 49 ft |
| Location | Oneida County, Wisconsin |
How does Blue Lake compare?
With an overall water quality grade of A, Blue Lake matches or beats the Wisconsin state average of Grade B. It ranks #26 of 140 lakes in Oneida County by water quality score.
Water clarity (Secchi depth) sits at 73.8 feet. That counts as exceptional clarity — sunlight penetrates deep, supporting submerged plants and limiting algae.