Cleanest Lakes in Poweshiek County, Iowa
Diamond Lake in Poweshiek County leads the rankings with a water quality grade of F and 1.6 ft of clarity. Below are the top 2 cleanest monitored lakes in Poweshiek County, Iowa, ranked by EPA water quality score.
Ranked List
| # | Lake | County | Grade | Clarity | Phosphorus | Algae |
|---|---|---|---|---|---|---|
| 1 | Diamond Lake | Poweshiek | F | 1.6 ft | - | 44.6 µg/L |
| 2 | Arbor Lake Max Depth | Poweshiek | F | 1.3 ft | - | 53.2 µg/L |