How Clean Is Posey Lake?
Posey 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): 4.5 ft. Trophic State Index: 55.
Cleanliness Snapshot
| Metric | Posey Lake | Wisconsin avg |
|---|---|---|
| Overall Grade | D | B |
| Water Clarity (Secchi) | 4.5 ft | — |
| Trophic State Index | 55 | <50 = clean |
How does Posey Lake compare?
Posey Lake's grade of D falls below the Wisconsin state average of B. It ranks #8 of 8 lakes in Lenawee County by water quality score.