How Clean Is Middle Eau Claire Lake?
Middle 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): 17.3 ft. Phosphorus: 12.8 µg/L. Trophic State Index: 38.
Cleanliness Snapshot
| Metric | Middle Eau Claire Lake | Wisconsin avg |
|---|---|---|
| Overall Grade | A | C |
| Water Clarity (Secchi) | 17.3 ft | — |
| Phosphorus | 12.8 µg/L | <30 = clean |
| Trophic State Index | 38 | <50 = clean |
How does Middle Eau Claire Lake compare?
Middle Eau Claire Lake's grade of A matches or beats the Wisconsin state average of C. It ranks #10 of 52 lakes in Bayfield County by water quality score. Multi-year monitoring data shows water quality is improving based on 6 years of records.