Is O'Brien Lake Safe for Swimming?
O'Brien Lake in Itasca County, Minnesota has limited nutrient and algae sampling on record. A water-quality reading is not a swimming clearance. The state water agency and county health departments post current advisories; check them before you swim.. Water clarity: 13.1 ft visibility. Always check local health department advisories before swimming.
Key Metrics
| Metric | Value |
|---|---|
| Water Clarity (Secchi Depth) | 13.1 ft |
| Maximum Depth | 63 ft |
| Location | Itasca County, Minnesota |
How does O'Brien Lake compare?
O'Brien Lake does not have enough recent summer sampling to compare with the Minnesota state average.
Water clarity (Secchi depth) sits at 13.1 feet. That counts as exceptional clarity — sunlight penetrates deep, supporting submerged plants and limiting algae.
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