Cleanest Lakes in Sevier County, Utah
Nla Lake in Sevier County leads the rankings with a water quality grade of A and 33.1 ft of clarity. Below are the top 9 cleanest monitored lakes in Sevier County, Utah, ranked by EPA water quality score.
Ranked List
| # | Lake | County | Grade | Clarity | Phosphorus | Algae |
|---|---|---|---|---|---|---|
| 1 | Nla Lake | Sevier | A | 33.1 ft | - | 1.5 µg/L |
| 2 | Nla Lake | Sevier | A | 10.7 ft | - | 2.5 µg/L |
| 3 | Forsyth Reservoir | Sevier | A | 13.8 ft | - | 1.4 µg/L |
| 4 | Nla Lake | Sevier | C | 6.5 ft | - | 14.3 µg/L |
| 5 | Redmond Lake | Sevier | D | 0.7 ft | - | 15.6 µg/L |
| 6 | Koosharem Reservoir | Sevier | D | 7.2 ft | - | 58.4 µg/L |
| 7 | Nla Lake | Sevier | D | 4.6 ft | - | 39.2 µg/L |
| 8 | Johnson Reservoir | Sevier | D | 2 ft | - | 29.1 µg/L |
| 9 | Nla Lake | Sevier | F | 0.5 ft | - | 50.4 µg/L |