Is Altoona Lake Safe for Swimming?
Altoona Lake in Eau Claire 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: 3 ft visibility. Phosphorus: 99.6 µg/L. Always check local health department advisories before swimming.
Key Metrics
| Metric | Value |
|---|---|
| Overall Grade | D (Nutrient-rich) |
| Water Clarity (Secchi Depth) | 3 ft |
| Phosphorus | 99.6 μg/L |
| Maximum Depth | 25 ft |
| Location | Eau Claire County, Wisconsin |
How does Altoona Lake compare?
With an overall water quality grade of D, Altoona Lake falls below the Wisconsin state average of Grade B. It ranks #1 of 2 lakes in Eau Claire County by water quality score.
Water clarity (Secchi depth) sits at 3 feet. That falls into moderate clarity — typical for lakes with some nutrient enrichment.
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