Is Big Lake Safe for Swimming?
Big Lake in Beltrami County, Minnesota has a water quality grade of B (Good). Good for swimming, clear water with low algae levels. Water clarity: 9.7 ft visibility. Phosphorus: 15 µg/L. Always check local health department advisories before swimming.
Key Metrics
| Metric | Value |
|---|---|
| Overall Grade | B (Good) |
| Water Clarity (Secchi Depth) | 9.7 ft |
| Phosphorus | 15 μg/L |
| Maximum Depth | 35 ft |
| Location | Beltrami County, Minnesota |
How does Big Lake compare?
With an overall water quality grade of B, Big Lake matches or beats the Minnesota state average of Grade C. It ranks #49 of 92 lakes in Beltrami County by water quality score.
Water clarity (Secchi depth) sits at 9.7 feet. That puts the lake in good clarity range, with limited algae interference.