C
Lake Dubay - Peplin
Marathon County, Wisconsin
Water Quality Grade: C — Fair
Moderate clarity — visible to about 8.2 feet. Phosphorus level: 63.6 µg/L.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 2.5 m | C |
| Phosphorus | 63.6 µg/L | D |
| Chlorophyll-a (Algae) | No data |
County Ranking
Ranked #5 of 13 lakes in Marathon County
Data Sources
Data from the EPA Water Quality Portal
Grading methodology based on Metropolitan Council standards
Most recent sample: 2025-08-17
Monitoring stations: 1