Is Prairie Lake Safe for Swimming?
Prairie Lake in St. Louis 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: 5 ft visibility. Always check local health department advisories before swimming.
Key Metrics
| Metric | Value |
|---|---|
| Water Clarity (Secchi Depth) | 5 ft |
| Maximum Depth | 47 ft |
| Location | St. Louis County, Minnesota |
How does Prairie Lake compare?
Prairie Lake is not rated for water quality — it does not have enough recent summer sampling for a readings, so it is not compared with the Minnesota state average.
Water clarity (Secchi depth) sits at 5 feet. That falls into moderate clarity — typical for lakes with some nutrient enrichment.
Watch Prairie Lake water quality
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