How Clean Is Ada Lake?
Ada 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): 14 ft. Phosphorus: 10 µg/L. Trophic State Index: 38.
Cleanliness Snapshot
| Metric | Ada Lake | Minnesota avg |
|---|---|---|
| Overall Grade | A | C |
| Water Clarity (Secchi) | 14 ft | — |
| Phosphorus | 10 µg/L | <30 = clean |
| Trophic State Index | 38 | <50 = clean |
How does Ada Lake compare?
Ada Lake's grade of A matches or beats the Minnesota state average of C. It ranks #52 of 133 lakes in Cass County by water quality score. Multi-year monitoring data shows water quality is stable based on 5 years of records.