Is Big Pine Lake Safe for Swimming?
Big Pine Lake in Pine County, Minnesota has a water quality grade of C (Fair). Swim with caution, moderate algae may be present. Water clarity: 4.3 ft visibility. Phosphorus: 21 µg/L. Chlorophyll-a (algae): 20 µg/L. Always check local health department advisories before swimming.
Key Metrics
| Metric | Value |
|---|---|
| Overall Grade | C (Fair) |
| Water Clarity (Secchi Depth) | 4.3 ft |
| Phosphorus | 21 μg/L |
| Chlorophyll-a (Algae) | 20 μg/L |
| Maximum Depth | 25 ft |
| Location | Pine County, Minnesota |
How does Big Pine Lake compare?
With an overall water quality grade of C, Big Pine Lake matches or beats the Minnesota state average of Grade C. It ranks #12 of 19 lakes in Pine County by water quality score.
Water clarity (Secchi depth) sits at 4.3 feet. That falls into moderate clarity — typical for lakes with some nutrient enrichment. Algae levels (chlorophyll-a) measure 20 µg/L — elevated; risk of harmful algal bloom advisories increases at this concentration.