How Clean Is Little Big Lake?
Little Big 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): 9.3 ft. Phosphorus: 13.5 µg/L. Chlorophyll-a (algae): 2.8 µg/L. Trophic State Index: 42.
Cleanliness Snapshot
| Metric | Little Big Lake | Minnesota avg |
|---|---|---|
| Overall Grade | A | C |
| Water Clarity (Secchi) | 9.3 ft | — |
| Phosphorus | 13.5 µg/L | <30 = clean |
| Chlorophyll-a (Algae) | 2.8 µg/L | <10 = clean |
| Trophic State Index | 42 | <50 = clean |
How does Little Big Lake compare?
Little Big Lake's grade of A matches or beats the Minnesota state average of C. It ranks #22 of 85 lakes in Beltrami County by water quality score. Multi-year monitoring data shows water quality is improving based on 6 years of records.