How Clean Is Lake Nebagamon?
Lake Nebagamon 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 ft. Phosphorus: 17.7 µg/L. Trophic State Index: 39.
Cleanliness Snapshot
| Metric | Lake Nebagamon | Wisconsin avg |
|---|---|---|
| Overall Grade | A | B |
| Water Clarity (Secchi) | 23 ft | — |
| Phosphorus | 17.7 µg/L | <30 = clean |
| Trophic State Index | 39 | <50 = clean |
How does Lake Nebagamon compare?
Lake Nebagamon's grade of A matches or beats the Wisconsin state average of B. It ranks #5 of 40 lakes in Douglas County by water quality score. Multi-year monitoring data shows water quality is improving based on 7 years of records.