How Clean Is Lower Eau Claire Lake?
Lower Eau Claire Lake is among the cleanest lakes in Wisconsin. It received a water quality grade of A (Excellent) based on EPA monitoring data. Water clarity (Secchi depth): 18.5 ft. Trophic State Index: 35.
Cleanliness Snapshot
| Metric | Lower Eau Claire Lake | Wisconsin avg |
|---|---|---|
| Overall Grade | A | C |
| Water Clarity (Secchi) | 18.5 ft | — |
| Trophic State Index | 35 | <50 = clean |
How does Lower Eau Claire Lake compare?
Lower Eau Claire Lake's grade of A matches or beats the Wisconsin state average of C. It ranks #8 of 52 lakes in Bayfield County by water quality score. Multi-year monitoring data shows water quality is declining based on 6 years of records.