How Clean Is Hancock Lake?
Hancock 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): 5.4 ft. Phosphorus: 25.4 µg/L. Trophic State Index: 52.
Cleanliness Snapshot
| Metric | Hancock Lake | Wisconsin avg |
|---|---|---|
| Overall Grade | C | C |
| Water Clarity (Secchi) | 5.4 ft | — |
| Phosphorus | 25.4 µg/L | <30 = clean |
| Trophic State Index | 52 | <50 = clean |
How does Hancock Lake compare?
Hancock Lake's grade of C matches or beats the Wisconsin state average of C. It ranks #81 of 134 lakes in Oneida County by water quality score. Multi-year monitoring data shows water quality is improving based on 6 years of records.