Cleanest Lakes in Gem County, Idaho
Nla Lake in Gem County leads the rankings with a water quality grade of A and 17.6 ft of clarity. Below are the top 2 cleanest monitored lakes in Gem County, Idaho, ranked by EPA water quality score.
Ranked List
| # | Lake | County | Grade | Clarity | Phosphorus | Algae |
|---|---|---|---|---|---|---|
| 1 | Nla Lake | Gem | A | 17.6 ft | 19.7 µg/L | 1.3 µg/L |
| 2 | Black Cnyn Reservoir Ns of | Gem | B | 7.5 ft | 29.5 µg/L | 3.1 µg/L |