Cleanest Lakes in Dallas County, Iowa
Dale Maffitt Reservoir in Dallas County leads the rankings with a water quality grade of B and 9.8 ft of clarity. Below are the top 2 cleanest monitored lakes in Dallas County, Iowa, ranked by EPA water quality score.
Ranked List
| # | Lake | County | Grade | Clarity | Phosphorus | Algae |
|---|---|---|---|---|---|---|
| 1 | Dale Maffitt Reservoir | Dallas | B | 9.8 ft | - | 2.5 µg/L |
| 2 | Beaver Lake | Dallas | F | 1.9 ft | - | 62.2 µg/L |