Is Big Lake Safe for Swimming?
Big Lake in Carlton County, Minnesota has a water quality grade of A (Excellent). Excellent for swimming — crystal clear water with minimal algae. Water clarity: 11.8 ft visibility. Phosphorus: 12 µg/L. Chlorophyll-a (algae): 3.1 µg/L. Always check local health department advisories before swimming.
Key Metrics
| Metric | Value |
|---|---|
| Overall Grade | A (Excellent) |
| Water Clarity (Secchi Depth) | 11.8 ft |
| Phosphorus | 12 μg/L |
| Chlorophyll-a (Algae) | 3.1 μg/L |
| Maximum Depth | 25 ft |
| Location | Carlton County, Minnesota |