Is Long Lake Safe for Swimming?
Long Lake in Itasca County, Minnesota has a water quality grade of A (Excellent). Excellent for swimming — crystal clear water with minimal algae. Water clarity: 16.7 ft visibility. Phosphorus: 8 µg/L. Always check local health department advisories before swimming.
Key Metrics
| Metric | Value |
|---|---|
| Overall Grade | A (Excellent) |
| Water Clarity (Secchi Depth) | 16.7 ft |
| Phosphorus | 8 μg/L |
| Maximum Depth | 72 ft |
| Location | Itasca County, Minnesota |