Cleanest Lakes in Beaverhead County, Montana
Nla Lake in Beaverhead County leads the rankings with a water quality grade of A and 13.1 ft of clarity. Below are the top 4 cleanest monitored lakes in Beaverhead County, Montana, ranked by EPA water quality score.
Ranked List
| # | Lake | County | Grade | Clarity | Phosphorus | Algae |
|---|---|---|---|---|---|---|
| 1 | Nla Lake | Beaverhead | A | 13.1 ft | 15.4 µg/L | 4.2 µg/L |
| 2 | Nla Lake | Beaverhead | B | 24.6 ft | 11000 µg/L | 1.2 µg/L |
| 3 | Clark Canyon Reservoir | Beaverhead | C | 7.4 ft | 30 µg/L | 5.4 µg/L |
| 4 | Nla Lake | Beaverhead | C | 2.6 ft | 56 µg/L | 2.8 µg/L |