How Clean Is Cass Lake Allens Bay?
Cass Lake Allens Bay 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): 16.6 ft. Phosphorus: 18.5 µg/L. Chlorophyll-a (algae): 4.7 µg/L. Trophic State Index: 43.
Cleanliness Snapshot
| Metric | Cass Lake Allens Bay | Minnesota avg |
|---|---|---|
| Overall Grade | A | C |
| Water Clarity (Secchi) | 16.6 ft | — |
| Phosphorus | 18.5 µg/L | <30 = clean |
| Chlorophyll-a (Algae) | 4.7 µg/L | <10 = clean |
| Trophic State Index | 43 | <50 = clean |
How does Cass Lake Allens Bay compare?
Cass Lake Allens Bay's grade of A matches or beats the Minnesota state average of C. It ranks #57 of 85 lakes in Beltrami County by water quality score. Multi-year monitoring data shows water quality is declining based on 2 years of records.