Cleanest Lakes in Iowa County, Wisconsin
Black Hawk Lake in Iowa County leads the rankings with a water quality grade of B and 5 ft of clarity. Below are the top 4 cleanest monitored lakes in Iowa County, Wisconsin, ranked by EPA water quality score.
Ranked List
| # | Lake | County | Grade | Clarity | Phosphorus | Algae |
|---|---|---|---|---|---|---|
| 1 | Black Hawk Lake | Iowa | B | 5 ft | 19.9 µg/L | - |
| 2 | Helen Lake | Iowa | D | 3.4 ft | 54.7 µg/L | - |
| 3 | Twin Valley Lake | Iowa | NR | - | - | - |
| 4 | Cox Hollow Lake | Iowa | NR | - | - | - |
More Answers for Iowa County, Wisconsin
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