Is Maple Lake Safe for Swimming?
Maple Lake in Polk County, Minnesota has a water quality grade of D (Poor). Swimming not recommended, poor water quality with high algae risk. Water clarity: 3.3 ft visibility. Phosphorus: 38.5 µg/L. Always check local health department advisories before swimming.
Key Metrics
| Metric | Value |
|---|---|
| Overall Grade | D (Poor) |
| Water Clarity (Secchi Depth) | 3.3 ft |
| Phosphorus | 38.5 μg/L |
| Maximum Depth | 14 ft |
| Location | Polk County, Minnesota |
How does Maple Lake compare?
With an overall water quality grade of D, Maple Lake falls below the Minnesota state average of Grade C. It ranks #13 of 21 lakes in Polk County by water quality score.
Water clarity (Secchi depth) sits at 3.3 feet. That falls into moderate clarity — typical for lakes with some nutrient enrichment.