How Clean Is Ely Lake?
Ely 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): 17.1 ft. Phosphorus: 7 µg/L. Trophic State Index: 34.
Cleanliness Snapshot
| Metric | Ely Lake | Minnesota avg |
|---|---|---|
| Overall Grade | A | C |
| Water Clarity (Secchi) | 17.1 ft | — |
| Phosphorus | 7 µg/L | <30 = clean |
| Trophic State Index | 34 | <50 = clean |
How does Ely Lake compare?
Ely Lake's grade of A matches or beats the Minnesota state average of C. It ranks #19 of 215 lakes in St. Louis County by water quality score. Multi-year monitoring data shows water quality is improving based on 6 years of records.