How Clean Is Lake Noquebay?
Lake Noquebay is among the cleanest lakes in Wisconsin. It received a water quality grade of A (Excellent) based on EPA monitoring data. Water clarity (Secchi depth): 23.8 ft. Phosphorus: 19.4 µg/L. Trophic State Index: 39.
Cleanliness Snapshot
| Metric | Lake Noquebay | Wisconsin avg |
|---|---|---|
| Overall Grade | A | B |
| Water Clarity (Secchi) | 23.8 ft | — |
| Phosphorus | 19.4 µg/L | <30 = clean |
| Trophic State Index | 39 | <50 = clean |
How does Lake Noquebay compare?
Lake Noquebay's grade of A matches or beats the Wisconsin state average of B. It ranks #8 of 22 lakes in Marinette County by water quality score. Multi-year monitoring data shows water quality is improving based on 5 years of records.