Is Unnamed Lake Safe for Swimming?
Unnamed Lake in Washington County, Minnesota has nutrient and algae measurements on record from state and federal monitoring. Chlorophyll-a in the monitoring record runs high enough that algae is a factor. 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: 3 ft visibility. Phosphorus: 77 µg/L. Chlorophyll-a (algae): 28.5 µg/L. Always check local health department advisories before swimming.
Key Metrics
| Metric | Value |
|---|---|
| Water Clarity (Secchi Depth) | 3 ft |
| Phosphorus | 77 μg/L |
| Chlorophyll-a (Algae) | 28.5 μg/L |
| Maximum Depth | 60 ft |
| Location | Washington County, Minnesota |
How does Unnamed Lake compare?
On nutrient and algae readings, Unnamed Lake runs above the Minnesota state average. It ranks #48 of 75 lakes in Washington County on nutrient and algae readings.
Water clarity (Secchi depth) sits at 3 feet. That falls into moderate clarity — typical for lakes with some nutrient enrichment. Algae levels (chlorophyll-a) measure 28.5 µg/L — elevated; risk of harmful algal bloom advisories increases at this concentration.
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