Is Outlet of Onamia Lake on the Rum River Safe for Swimming?
Outlet of Onamia Lake on the Rum River in Mille Lacs County, Minnesota has a water quality grade of A (Excellent). Excellent for swimming, crystal clear water with minimal algae. Phosphorus: 25 µg/L. Chlorophyll-a (algae): 0.6 µg/L. Always check local health department advisories before swimming.
Key Metrics
| Metric | Value |
|---|---|
| Overall Grade | A (Excellent) |
| Phosphorus | 25 μg/L |
| Chlorophyll-a (Algae) | 0.6 μg/L |
| Maximum Depth | 10 ft |
| Location | Mille Lacs County, Minnesota |
How does Outlet of Onamia Lake on the Rum River compare?
With an overall water quality grade of A, Outlet of Onamia Lake on the Rum River matches or beats the Minnesota state average of Grade C. It ranks #7 of 11 lakes in Mille Lacs County by water quality score.