Is Birch Lake Safe for Swimming?
Birch Lake in Cass County, Minnesota has a water quality grade of A (Excellent). Excellent for swimming — crystal clear water with minimal algae. Water clarity: 13.7 ft visibility. Phosphorus: 12 µg/L. Always check local health department advisories before swimming.
Key Metrics
| Metric | Value |
|---|---|
| Overall Grade | A (Excellent) |
| Water Clarity (Secchi Depth) | 13.7 ft |
| Phosphorus | 12 μg/L |
| Maximum Depth | 45 ft |
| Location | Cass County, Minnesota |