Is Lake Dubay Safe for Swimming?
Lake Dubay in Marathon County, Wisconsin has a water quality grade of D (Nutrient-rich). Nutrients and algae run higher than average — check local advisories before swimming, and skip the water if you see scum. Water clarity: 2.5 ft visibility. Phosphorus: 64.9 µg/L. Always check local health department advisories before swimming.
Key Metrics
| Metric | Value |
|---|---|
| Overall Grade | D (Nutrient-rich) |
| Water Clarity (Secchi Depth) | 2.5 ft |
| Phosphorus | 64.9 μg/L |
| Location | Marathon County, Wisconsin |
How does Lake Dubay compare?
With an overall water quality grade of D, Lake Dubay falls below the Wisconsin state average of Grade B. It ranks #4 of 4 lakes in Marathon County by water quality score.
Water clarity (Secchi depth) sits at 2.5 feet. That signals heavy algae or sediment, often tied to high phosphorus from runoff.
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