How Clean Is Mountain Lake?
Mountain Lake has very poor water quality and a high algae bloom risk. It received a water quality grade of F (Very Poor) based on EPA monitoring data. Water clarity (Secchi depth): 1.2 ft. Phosphorus: 148.5 µg/L. Trophic State Index: 75.
Cleanliness Snapshot
| Metric | Mountain Lake | Minnesota avg |
|---|---|---|
| Overall Grade | F | C |
| Water Clarity (Secchi) | 1.2 ft | — |
| Phosphorus | 148.5 µg/L | <30 = clean |
| Trophic State Index | 75 | <50 = clean |
How does Mountain Lake compare?
Mountain Lake's grade of F falls below the Minnesota state average of C. It ranks #6 of 6 lakes in Cottonwood County by water quality score.