How Clean Is Altoona Lake?
Altoona Lake is nutrient-rich, with elevated phosphorus and algae. It received a water quality grade of D (Nutrient-rich) based on EPA monitoring data. Water clarity (Secchi depth): 3 ft. Phosphorus: 99.6 µg/L. Trophic State Index: 66.
Cleanliness Snapshot
| Metric | Altoona Lake | Wisconsin avg |
|---|---|---|
| Overall Grade | D | B |
| Water Clarity (Secchi) | 3 ft | — |
| Phosphorus | 99.6 µg/L | <30 = clean |
| Trophic State Index | 66 | <50 = clean |
How does Altoona Lake compare?
Altoona Lake's grade of D falls below the Wisconsin state average of B. It ranks #1 of 2 lakes in Eau Claire County by water quality score. Multi-year monitoring data shows water quality is declining based on 6 years of records.
Watch Altoona Lake water quality
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