Is Nine Eagles Lake Safe for Swimming?
Nine Eagles Lake in Decatur County, Wisconsin has a water quality grade of A (Excellent). Excellent for swimming, crystal clear water with minimal algae. Water clarity: 11 ft visibility. Chlorophyll-a (algae): 3.3 µg/L. Always check local health department advisories before swimming.
Key Metrics
| Metric | Value |
|---|---|
| Overall Grade | A (Excellent) |
| Water Clarity (Secchi Depth) | 11 ft |
| Chlorophyll-a (Algae) | 3.3 μg/L |
| Location | Decatur County, Wisconsin |
How does Nine Eagles Lake compare?
With an overall water quality grade of A, Nine Eagles Lake matches or beats the Wisconsin state average of Grade D. It ranks #1 of 3 lakes in Decatur County by water quality score.
Water clarity (Secchi depth) sits at 11 feet. That counts as exceptional clarity — sunlight penetrates deep, supporting submerged plants and limiting algae. Algae levels (chlorophyll-a) measure 3.3 µg/L — low and well within safe swimming guidelines.