Is Apple River Flowage Lake Safe for Swimming?
Apple River Flowage Lake in Polk County, Wisconsin has a water quality grade of D (Nutrient-rich). Nutrients and algae run higher than average — check local advisories before swimming, and skip the water if you see scum. Water clarity: 5.9 ft visibility. Phosphorus: 78.5 µg/L. Always check local health department advisories before swimming.
Key Metrics
| Metric | Value |
|---|---|
| Overall Grade | D (Nutrient-rich) |
| Water Clarity (Secchi Depth) | 5.9 ft |
| Phosphorus | 78.5 μg/L |
| Maximum Depth | 18 ft |
| Location | Polk County, Wisconsin |
How does Apple River Flowage Lake compare?
With an overall water quality grade of D, Apple River Flowage Lake falls below the Wisconsin state average of Grade B. It ranks #49 of 55 lakes in Polk County by water quality score.
Water clarity (Secchi depth) sits at 5.9 feet. That falls into moderate clarity — typical for lakes with some nutrient enrichment.
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