Is Juanita Lake Safe for Swimming?
Juanita Lake in Foster County, North Dakota has a water quality grade of F (Very Poor). Avoid swimming, very poor water quality, potential algae toxins. Water clarity: 1 ft visibility. Chlorophyll-a (algae): 154.2 µg/L. Always check local health department advisories before swimming.
Key Metrics
| Metric | Value |
|---|---|
| Overall Grade | F (Very Poor) |
| Water Clarity (Secchi Depth) | 1 ft |
| Chlorophyll-a (Algae) | 154.2 μg/L |
| Maximum Depth | 9.9 ft |
| Location | Foster County, North Dakota |
How does Juanita Lake compare?
With an overall water quality grade of F, Juanita Lake falls below the North Dakota state average of Grade C. It ranks #1 of 1 lakes in Foster County by water quality score.
Water clarity (Secchi depth) sits at 1 feet. That signals heavy algae or sediment, often tied to high phosphorus from runoff. Algae levels (chlorophyll-a) measure 154.2 µg/L — elevated; risk of harmful algal bloom advisories increases at this concentration.