How Clean Is Maple Lake?
Maple 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): 13.7 ft. Phosphorus: 15 µg/L. Trophic State Index: 41.
Cleanliness Snapshot
| Metric | Maple Lake | Minnesota avg |
|---|---|---|
| Overall Grade | A | C |
| Water Clarity (Secchi) | 13.7 ft | — |
| Phosphorus | 15 µg/L | <30 = clean |
| Trophic State Index | 41 | <50 = clean |
How does Maple Lake compare?
Maple Lake's grade of A matches or beats the Minnesota state average of C. It ranks #15 of 51 lakes in Douglas County by water quality score. Multi-year monitoring data shows water quality is improving based on 5 years of records.