Is Sybil Lake Safe for Swimming?
Sybil 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: 20 ft visibility. Phosphorus: 9 µg/L. Always check local health department advisories before swimming.
Key Metrics
| Metric | Value |
|---|---|
| Overall Grade | A (Excellent) |
| Water Clarity (Secchi Depth) | 20 ft |
| Phosphorus | 9 μg/L |
| Maximum Depth | 74 ft |
| Location | Otter Tail County, Minnesota |
How does Sybil Lake compare?
With an overall water quality grade of A, Sybil Lake matches or beats the Minnesota state average of Grade C. It ranks #18 of 97 lakes in Otter Tail County by water quality score.
Water clarity (Secchi depth) sits at 20 feet. That counts as exceptional clarity — sunlight penetrates deep, supporting submerged plants and limiting algae.