Is Johnson Lake Safe for Swimming?
Johnson Lake in Kandiyohi County, Minnesota has a water quality grade of F (Very Poor). Avoid swimming, very poor water quality, potential algae toxins. Water clarity: 1.6 ft visibility. Phosphorus: 96 µg/L. Always check local health department advisories before swimming.
Key Metrics
| Metric | Value |
|---|---|
| Overall Grade | F (Very Poor) |
| Water Clarity (Secchi Depth) | 1.6 ft |
| Phosphorus | 96 μg/L |
| Maximum Depth | 18 ft |
| Location | Kandiyohi County, Minnesota |
How does Johnson Lake compare?
With an overall water quality grade of F, Johnson Lake falls below the Minnesota state average of Grade C. It ranks #28 of 35 lakes in Kandiyohi County by water quality score.
Water clarity (Secchi depth) sits at 1.6 feet. That signals heavy algae or sediment, often tied to high phosphorus from runoff.