Is Lake Capri Safe for Swimming?
Lake Capri in St. Francois County, Wisconsin has a water quality grade of A (Excellent). Excellent for swimming, crystal clear water with minimal algae. Water clarity: 16.3 ft visibility. Phosphorus: 5.7 µg/L. Chlorophyll-a (algae): 0.9 µg/L. Always check local health department advisories before swimming.
Key Metrics
| Metric | Value |
|---|---|
| Overall Grade | A (Excellent) |
| Water Clarity (Secchi Depth) | 16.3 ft |
| Phosphorus | 5.7 μg/L |
| Chlorophyll-a (Algae) | 0.9 μg/L |
| Location | St. Francois County, Wisconsin |
How does Lake Capri compare?
With an overall water quality grade of A, Lake Capri matches or beats the Wisconsin state average of Grade C. It ranks #1 of 4 lakes in St. Francois County by water quality score.
Water clarity (Secchi depth) sits at 16.3 feet. That counts as exceptional clarity — sunlight penetrates deep, supporting submerged plants and limiting algae. Algae levels (chlorophyll-a) measure 0.9 µg/L — low and well within safe swimming guidelines.