Cleanest Lakes in Decatur County, Iowa
Nine Eagles Lake in Decatur County leads the rankings with a water quality grade of A and 11 ft of clarity. Below are the top 3 cleanest monitored lakes in Decatur County, Iowa, ranked by EPA water quality score.
Ranked List
| # | Lake | County | Grade | Clarity | Phosphorus | Algae |
|---|---|---|---|---|---|---|
| 1 | Nine Eagles Lake | Decatur | A | 11 ft | - | 3.3 µg/L |
| 2 | Slipbluff Lake | Decatur | B | 9 ft | - | 4.5 µg/L |
| 3 | Little River Lake | Decatur | F | 2.3 ft | - | 70 µg/L |