How Clean Is Big Sand Lake?
Big Sand Lake 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): 11 ft. Phosphorus: 19.5 µg/L. Chlorophyll-a (algae): 2.3 µg/L. Trophic State Index: 43.
Cleanliness Snapshot
| Metric | Big Sand Lake | Wisconsin avg |
|---|---|---|
| Overall Grade | A | B |
| Water Clarity (Secchi) | 11 ft | — |
| Phosphorus | 19.5 µg/L | <30 = clean |
| Chlorophyll-a (Algae) | 2.3 µg/L | <10 = clean |
| Trophic State Index | 43 | <50 = clean |
How does Big Sand Lake compare?
Big Sand Lake's grade of A matches or beats the Wisconsin state average of B. It ranks #1 of 30 lakes in Burnett County by water quality score. Multi-year monitoring data shows water quality is stable based on 5 years of records.