Cleanest Lakes in Gem County, Idaho
Black Cnyn Reservoir Ns of in Gem County leads the rankings on measured clarity and nutrients and 7.5 ft of clarity. Below are the top 2 cleanest monitored lakes in Gem County, Idaho, ranked on EPA nutrient and algae measurements.
Ranked List
| # | Lake | County | Clarity | Phosphorus | Algae |
|---|---|---|---|---|---|
| 1 | Black Cnyn Reservoir Ns of | Gem | 7.5 ft | 29.5 µg/L | 3.1 µg/L |
| 2 | Black Canyon Reservoir | Gem | - | - | - |
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