Is Rock River Lake Safe for Swimming?
Rock River Lake in Rock County, Wisconsin has a water quality grade of A (Excellent). Excellent for swimming, crystal clear water with minimal algae. Water clarity: 21 ft visibility. Always check local health department advisories before swimming.
Key Metrics
| Metric | Value |
|---|---|
| Overall Grade | A (Excellent) |
| Water Clarity (Secchi Depth) | 21 ft |
| Location | Rock County, Wisconsin |
How does Rock River Lake compare?
With an overall water quality grade of A, Rock River Lake matches or beats the Wisconsin state average of Grade C. It ranks #1 of 4 lakes in Rock County by water quality score.
Water clarity (Secchi depth) sits at 21 feet. That counts as exceptional clarity — sunlight penetrates deep, supporting submerged plants and limiting algae.