How Clean Is Eau Claire Lake?
Eau Claire Lake has fair water quality — typical of lakes with moderate nutrient enrichment. It received a water quality grade of C (Fair) based on EPA monitoring data. Water clarity (Secchi depth): 9 ft. Phosphorus: 88 µg/L. Trophic State Index: 57.
Cleanliness Snapshot
| Metric | Eau Claire Lake | Wisconsin avg |
|---|---|---|
| Overall Grade | C | B |
| Water Clarity (Secchi) | 9 ft | — |
| Phosphorus | 88 µg/L | <30 = clean |
| Trophic State Index | 57 | <50 = clean |
How does Eau Claire Lake compare?
Eau Claire Lake's grade of C falls below the Wisconsin state average of B. It ranks #2 of 3 lakes in Eau Claire County by water quality score. Multi-year monitoring data shows water quality is improving based on 5 years of records.