Is Mountain Lake Safe for Swimming?
Mountain Lake in Unknown 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: 19 ft visibility. Always check local health department advisories before swimming.
Key Metrics
| Metric | Value |
|---|---|
| Water Clarity (Secchi Depth) | 19 ft |
| Maximum Depth | 130 ft |
| Location | Unknown County, Minnesota |
How does Mountain Lake compare?
Mountain 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 19 feet. That counts as exceptional clarity — sunlight penetrates deep, supporting submerged plants and limiting algae.
Watch Mountain Lake water quality
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