Is Mountain Lake Safe for Swimming?
Mountain Lake in Cottonwood County, Minnesota has a water quality grade of F (Very Poor). Avoid swimming, very poor water quality, potential algae toxins. Water clarity: 1.2 ft visibility. Phosphorus: 148.5 µg/L. Always check local health department advisories before swimming.
Key Metrics
| Metric | Value |
|---|---|
| Overall Grade | F (Very Poor) |
| Water Clarity (Secchi Depth) | 1.2 ft |
| Phosphorus | 148.5 μg/L |
| Location | Cottonwood County, Minnesota |
How does Mountain Lake compare?
With an overall water quality grade of F, Mountain Lake falls below the Minnesota state average of Grade C. It ranks #6 of 6 lakes in Cottonwood County by water quality score.
Water clarity (Secchi depth) sits at 1.2 feet. That signals heavy algae or sediment, often tied to high phosphorus from runoff.