Is Ml-Peterson Lake Safe for Swimming?
Ml-Peterson Lake in Mille Lacs County, Minnesota has a water quality grade of B (Good). Good for swimming, clear water with low algae levels. Water clarity: 7.4 ft visibility. Phosphorus: 26.5 µg/L. Chlorophyll-a (algae): 3.9 µg/L. Always check local health department advisories before swimming.
Key Metrics
| Metric | Value |
|---|---|
| Overall Grade | B (Good) |
| Water Clarity (Secchi Depth) | 7.4 ft |
| Phosphorus | 26.5 μg/L |
| Chlorophyll-a (Algae) | 3.9 μg/L |
| Maximum Depth | 42 ft |
| Location | Mille Lacs County, Minnesota |
How does Ml-Peterson Lake compare?
With an overall water quality grade of B, Ml-Peterson Lake matches or beats the Minnesota state average of Grade C. It ranks #5 of 11 lakes in Mille Lacs County by water quality score.
Water clarity (Secchi depth) sits at 7.4 feet. That puts the lake in good clarity range, with limited algae interference. Algae levels (chlorophyll-a) measure 3.9 µg/L — low and well within safe swimming guidelines.