How Clean Is Big Sand Lake?
Big Sand Lake is among the cleanest lakes in Minnesota. It received a water quality grade of A (Excellent) based on EPA monitoring data. Water clarity (Secchi depth): 23 ft. Phosphorus: 7 µg/L. Trophic State Index: 32.
Cleanliness Snapshot
| Metric | Big Sand Lake | Minnesota avg |
|---|---|---|
| Overall Grade | A | C |
| Water Clarity (Secchi) | 23 ft | — |
| Phosphorus | 7 µg/L | <30 = clean |
| Trophic State Index | 32 | <50 = clean |
How does Big Sand Lake compare?
Big Sand Lake's grade of A matches or beats the Minnesota state average of C. It ranks #16 of 77 lakes in Hubbard County by water quality score. Multi-year monitoring data shows water quality is declining based on 5 years of records.