How Clean Is Big Lake?
Big Lake is among the cleanest lakes in Wisconsin. It received a water quality grade of A (Excellent) based on EPA monitoring data. Phosphorus: 17.4 µg/L. Trophic State Index: 45.
Cleanliness Snapshot
| Metric | Big Lake | Wisconsin avg |
|---|---|---|
| Overall Grade | A | B |
| Phosphorus | 17.4 µg/L | <30 = clean |
| Trophic State Index | 45 | <50 = clean |
How does Big Lake compare?
Big Lake's grade of A matches or beats the Wisconsin state average of B. It ranks #17 of 202 lakes in Vilas County by water quality score. Multi-year monitoring data shows water quality is improving based on 5 years of records.