Cleanest Lakes in Hardin County, Iowa
Upper Pine Lake in Hardin County leads the rankings with a water quality grade of F and 1.3 ft of clarity. Below are the top 2 cleanest monitored lakes in Hardin County, Iowa, ranked by EPA water quality score.
Ranked List
| # | Lake | County | Grade | Clarity | Phosphorus | Algae |
|---|---|---|---|---|---|---|
| 1 | Upper Pine Lake | Hardin | F | 1.3 ft | - | 66.7 µg/L |
| 2 | Lower Pine Lake | Hardin | F | 1.3 ft | - | 73.5 µg/L |