Cleanest Lakes in O'Brien County, Iowa
Dog Creek Lake in O'Brien County leads the rankings with a water quality grade of D and 3.4 ft of clarity. Below are the top 2 cleanest monitored lakes in O'Brien County, Iowa, ranked by EPA water quality score.
Ranked List
| # | Lake | County | Grade | Clarity | Phosphorus | Algae |
|---|---|---|---|---|---|---|
| 1 | Dog Creek Lake | O'Brien | D | 3.4 ft | - | 25 µg/L |
| 2 | Mill Creek Lake | O'Brien | F | 3 ft | - | 36.1 µg/L |