How Clean Is Apple River Flowage Lake?
Apple River Flowage 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): 18 ft. Phosphorus: 78.5 µg/L. Trophic State Index: 51.
Cleanliness Snapshot
| Metric | Apple River Flowage Lake | Wisconsin avg |
|---|---|---|
| Overall Grade | B | B |
| Water Clarity (Secchi) | 18 ft | — |
| Phosphorus | 78.5 µg/L | <30 = clean |
| Trophic State Index | 51 | <50 = clean |
How does Apple River Flowage Lake compare?
Apple River Flowage Lake's grade of B matches or beats the Wisconsin state average of B. It ranks #59 of 77 lakes in Polk County by water quality score. Multi-year monitoring data shows water quality is improving based on 7 years of records.