How Clean Is Lone Lake?
Lone 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): 22.7 ft. Trophic State Index: 32.
Cleanliness Snapshot
| Metric | Lone Lake | Minnesota avg |
|---|---|---|
| Overall Grade | A | C |
| Water Clarity (Secchi) | 22.7 ft | — |
| Trophic State Index | 32 | <50 = clean |
How does Lone Lake compare?
Lone Lake's grade of A matches or beats the Minnesota state average of C. It ranks #4 of 53 lakes in Aitkin County by water quality score. Multi-year monitoring data shows water quality is declining based on 5 years of records.