Cleanest Lakes in Cache County, Utah
Newton Reservoir in Cache County leads the rankings with a water quality grade of A and 15.4 ft of clarity. Below are the top 10 cleanest monitored lakes in Cache County, Utah, ranked by EPA water quality score.
Ranked List
| # | Lake | County | Grade | Clarity | Phosphorus | Algae |
|---|---|---|---|---|---|---|
| 1 | Newton Reservoir | Cache | A | 15.4 ft | - | 1.7 µg/L |
| 2 | Newton Reservoir West of Parking Lot | Cache | A | 18 ft | - | 1.2 µg/L |
| 3 | Nla Lake | Cache | A | 12.5 ft | - | 0.6 µg/L |
| 4 | Hyrum Reservoir | Cache | B | 6.9 ft | - | 2.1 µg/L |
| 5 | Porcupine Reservoir | Cache | B | 8.5 ft | - | 3.8 µg/L |
| 6 | Nla Lake | Cache | B | 6.7 ft | - | 8.6 µg/L |
| 7 | Third Dam Lake | Cache | B | 4.3 ft | - | 1 µg/L |
| 8 | Cutler Reservoir | Cache | D | 1.2 ft | - | 17.4 µg/L |
| 9 | Cutler Reservoir | Cache | D | 1 ft | - | 11.2 µg/L |
| 10 | Nla Lake | Cache | F | 0.5 ft | - | 76.1 µg/L |