Is Marquette Lake Safe for Swimming?
Marquette Lake in Beltrami County, Minnesota has a water quality grade of B (Good). Good for swimming, clear water with low algae levels. Water clarity: 8.5 ft visibility. Phosphorus: 24 µg/L. Always check local health department advisories before swimming.
Key Metrics
| Metric | Value |
|---|---|
| Overall Grade | B (Good) |
| Water Clarity (Secchi Depth) | 8.5 ft |
| Phosphorus | 24 μg/L |
| Maximum Depth | 51 ft |
| Location | Beltrami County, Minnesota |
How does Marquette Lake compare?
With an overall water quality grade of B, Marquette Lake matches or beats the Minnesota state average of Grade C. It ranks #68 of 86 lakes in Beltrami County by water quality score.
Water clarity (Secchi depth) sits at 8.5 feet. That puts the lake in good clarity range, with limited algae interference.