Is Port Perry Lake North Arm Safe for Swimming?
Port Perry Lake North Arm in Perry County, Wisconsin has a water quality grade of B (Good). Good for swimming, clear water with low algae levels. Water clarity: 7.4 ft visibility. Phosphorus: 9.5 µg/L. Chlorophyll-a (algae): 2.9 µg/L. Always check local health department advisories before swimming.
Key Metrics
| Metric | Value |
|---|---|
| Overall Grade | B (Good) |
| Water Clarity (Secchi Depth) | 7.4 ft |
| Phosphorus | 9.5 μg/L |
| Chlorophyll-a (Algae) | 2.9 μg/L |
| Location | Perry County, Wisconsin |
How does Port Perry Lake North Arm compare?
With an overall water quality grade of B, Port Perry Lake North Arm matches or beats the Wisconsin state average of Grade C. It ranks #2 of 3 lakes in Perry County by water quality score.
Water clarity (Secchi depth) sits at 7.4 feet. That puts the lake in good clarity range, with limited algae interference. Algae levels (chlorophyll-a) measure 2.9 µg/L — low and well within safe swimming guidelines.