Is Big Butternut Lake Safe for Swimming?
Big Butternut Lake in Polk County, Wisconsin has nutrient and algae measurements on record from state and federal monitoring. 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: 4.5 ft visibility. Phosphorus: 62.1 µg/L. Always check local health department advisories before swimming.
Key Metrics
| Metric | Value |
|---|---|
| Water Clarity (Secchi Depth) | 4.5 ft |
| Phosphorus | 62.1 μg/L |
| Maximum Depth | 19 ft |
| Location | Polk County, Wisconsin |
How does Big Butternut Lake compare?
On nutrient and algae readings, Big Butternut Lake runs above the Wisconsin state average. It ranks #44 of 55 lakes in Polk County on nutrient and algae readings.
Water clarity (Secchi depth) sits at 4.5 feet. That falls into moderate clarity — typical for lakes with some nutrient enrichment.
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