How Clean Is Lac Vieux Desert Lake?
Lac Vieux Desert Lake has fair water quality — typical of lakes with moderate nutrient enrichment. It received a water quality grade of C (Fair) based on EPA monitoring data. Water clarity (Secchi depth): 5.7 ft. Phosphorus: 28.2 µg/L. Trophic State Index: 52.
Cleanliness Snapshot
| Metric | Lac Vieux Desert Lake | Wisconsin avg |
|---|---|---|
| Overall Grade | C | C |
| Water Clarity (Secchi) | 5.7 ft | — |
| Phosphorus | 28.2 µg/L | <30 = clean |
| Trophic State Index | 52 | <50 = clean |
How does Lac Vieux Desert Lake compare?
Lac Vieux Desert Lake's grade of C matches or beats the Wisconsin state average of C. It ranks #140 of 191 lakes in Vilas County by water quality score. Multi-year monitoring data shows water quality is stable based on 3 years of records.