How Clean Is Bone Lake?
Bone Lake is a clean lake by Wisconsin standards. It received a water quality grade of B (Good) based on EPA monitoring data. Water clarity (Secchi depth): 7.5 ft. Phosphorus: 20.2 µg/L. Trophic State Index: 48.
Cleanliness Snapshot
| Metric | Bone Lake | Wisconsin avg |
|---|---|---|
| Overall Grade | B | C |
| Water Clarity (Secchi) | 7.5 ft | — |
| Phosphorus | 20.2 µg/L | <30 = clean |
| Trophic State Index | 48 | <50 = clean |
How does Bone Lake compare?
Bone Lake's grade of B matches or beats the Wisconsin state average of C. It ranks #27 of 73 lakes in Polk County by water quality score. Multi-year monitoring data shows water quality is stable based on 6 years of records.