Is Black Hawk Lake Safe for Swimming?
Black Hawk Lake in Iowa County, Wisconsin has a water quality grade of B (Good). Good for swimming, clear water with low algae levels. Water clarity: 5 ft visibility. Phosphorus: 19.9 µg/L. Always check local health department advisories before swimming.
Key Metrics
| Metric | Value |
|---|---|
| Overall Grade | B (Good) |
| Water Clarity (Secchi Depth) | 5 ft |
| Phosphorus | 19.9 μg/L |
| Location | Iowa County, Wisconsin |
How does Black Hawk Lake compare?
With an overall water quality grade of B, Black Hawk Lake matches or beats the Wisconsin state average of Grade C. It ranks #1 of 6 lakes in Iowa County by water quality score.
Water clarity (Secchi depth) sits at 5 feet. That falls into moderate clarity — typical for lakes with some nutrient enrichment.