How Clean Is Stump Lake?
Stump 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): 12.5 ft. Phosphorus: 19.5 µg/L. Trophic State Index: 44.
Cleanliness Snapshot
| Metric | Stump Lake | Minnesota avg |
|---|---|---|
| Overall Grade | A | C |
| Water Clarity (Secchi) | 12.5 ft | — |
| Phosphorus | 19.5 µg/L | <30 = clean |
| Trophic State Index | 44 | <50 = clean |
How does Stump Lake compare?
Stump Lake's grade of A matches or beats the Minnesota state average of C. It ranks #32 of 92 lakes in Beltrami County by water quality score. Multi-year monitoring data shows water quality is improving based on 5 years of records.