How Clean Is Hat Rapids Flowage Lake?
Hat Rapids Flowage Lake has poor water quality, with elevated phosphorus and algae. It received a water quality grade of D (Poor) based on EPA monitoring data. Water clarity (Secchi depth): 3.5 ft. Trophic State Index: 59.
Cleanliness Snapshot
| Metric | Hat Rapids Flowage Lake | Wisconsin avg |
|---|---|---|
| Overall Grade | D | C |
| Water Clarity (Secchi) | 3.5 ft | — |
| Trophic State Index | 59 | <50 = clean |
How does Hat Rapids Flowage Lake compare?
Hat Rapids Flowage Lake's grade of D falls below the Wisconsin state average of C. It ranks #105 of 134 lakes in Oneida County by water quality score. Multi-year monitoring data shows water quality is declining based on 4 years of records.