How Clean Is Lake Dubay?
Lake Dubay has poor water quality, with elevated phosphorus and algae. It received a water quality grade of D (Poor) based on EPA monitoring data. Water clarity (Secchi depth): 2.5 ft. Phosphorus: 63.6 µg/L. Trophic State Index: 64.
Cleanliness Snapshot
| Metric | Lake Dubay | Wisconsin avg |
|---|---|---|
| Overall Grade | D | C |
| Water Clarity (Secchi) | 2.5 ft | — |
| Phosphorus | 63.6 µg/L | <30 = clean |
| Trophic State Index | 64 | <50 = clean |
How does Lake Dubay compare?
Lake Dubay's grade of D falls below the Wisconsin state average of C. It ranks #3 of 5 lakes in Marathon County by water quality score. Multi-year monitoring data shows water quality is stable based on 6 years of records.