Is Upper Cullen Lake Safe for Swimming?
Upper Cullen Lake in Crow Wing County, Minnesota has a water quality grade of B (Good). Good for swimming, clear water with low algae levels. Water clarity: 9.4 ft visibility. Phosphorus: 23 µg/L. Always check local health department advisories before swimming.
Key Metrics
| Metric | Value |
|---|---|
| Overall Grade | B (Good) |
| Water Clarity (Secchi Depth) | 9.4 ft |
| Phosphorus | 23 μg/L |
| Maximum Depth | 40 ft |
| Location | Crow Wing County, Minnesota |
How does Upper Cullen Lake compare?
With an overall water quality grade of B, Upper Cullen Lake matches or beats the Minnesota state average of Grade C. It ranks #99 of 120 lakes in Crow Wing County by water quality score.
Water clarity (Secchi depth) sits at 9.4 feet. That puts the lake in good clarity range, with limited algae interference.