Is Rathbun Lake Safe for Swimming?
Rathbun Lake in Appanoose County, Wisconsin has a water quality grade of D (Poor). Swimming not recommended, poor water quality with high algae risk. Water clarity: 3 ft visibility. Chlorophyll-a (algae): 15.3 µg/L. Always check local health department advisories before swimming.
Key Metrics
| Metric | Value |
|---|---|
| Overall Grade | D (Poor) |
| Water Clarity (Secchi Depth) | 3 ft |
| Chlorophyll-a (Algae) | 15.3 μg/L |
| Location | Appanoose County, Wisconsin |
How does Rathbun Lake compare?
With an overall water quality grade of D, Rathbun Lake matches or beats the Wisconsin state average of Grade D. It ranks #1 of 1 lakes in Appanoose County by water quality score.
Water clarity (Secchi depth) sits at 3 feet. That falls into moderate clarity — typical for lakes with some nutrient enrichment. Algae levels (chlorophyll-a) measure 15.3 µg/L — moderate; acceptable for swimming on most days, but worth checking advisories.