Is Spider Lake Safe for Swimming?
Spider Lake in Sawyer County, Wisconsin has a water quality grade of B (Good). Good for swimming, clear water with low algae levels. Water clarity: 10.5 ft visibility. Phosphorus: 14.1 µg/L. Always check local health department advisories before swimming.
Key Metrics
| Metric | Value |
|---|---|
| Overall Grade | B (Good) |
| Water Clarity (Secchi Depth) | 10.5 ft |
| Phosphorus | 14.1 μg/L |
| Maximum Depth | 64 ft |
| Location | Sawyer County, Wisconsin |
How does Spider Lake compare?
With an overall water quality grade of B, Spider Lake matches or beats the Wisconsin state average of Grade B. It ranks #15 of 45 lakes in Sawyer County by water quality score.
Water clarity (Secchi depth) sits at 10.5 feet. That counts as exceptional clarity — sunlight penetrates deep, supporting submerged plants and limiting algae.