Is Gull Lake Safe for Swimming?
Gull Lake in Washburn County, Wisconsin is not rated for water quality — its monitoring record does not meet the evidence bar. Not rated for swimming — there is not enough monitoring data to judge this lake. Water clarity: 11 ft visibility. Phosphorus: 11.1 µg/L. Always check local health department advisories before swimming.
Key Metrics
| Metric | Value |
|---|---|
| Overall Grade | NR (Not rated) |
| Water Clarity (Secchi Depth) | 11 ft |
| Phosphorus | 11.1 μg/L |
| Maximum Depth | 19 ft |
| Location | Washburn County, Wisconsin |
How does Gull Lake compare?
Gull Lake is not rated for water quality — its monitoring record does not meet the evidence bar, so it is not compared with the Wisconsin state average.
Water clarity (Secchi depth) sits at 11 feet. That counts as exceptional clarity — sunlight penetrates deep, supporting submerged plants and limiting algae.