Is Long Lake Safe for Swimming?
Long Lake in Otter Tail County, Minnesota has a water quality grade of A (Excellent). Excellent for swimming — crystal clear water with minimal algae. Water clarity: 12.1 ft visibility. Phosphorus: 19.5 µg/L. Always check local health department advisories before swimming.
Key Metrics
| Metric | Value |
|---|---|
| Overall Grade | A (Excellent) |
| Water Clarity (Secchi Depth) | 12.1 ft |
| Phosphorus | 19.5 μg/L |
| Maximum Depth | 88 ft |
| Location | Otter Tail County, Minnesota |