Juab County Lake Quality
Utah, 5 lakes, average grade C (Fair)
Juab County has 5 graded lakes — a thin enough sample that one or two stressed lakes can move the county average noticeably. Use the per-lake pages below for what actually matters. Juab County averages to a C. The distribution behind that average matters more than the letter: a few stressed lakes versus many decent ones can produce the same average as the inverse.
The county's lakes lean shallow, which makes the grades sensitive to wind, sediment-resuspension, and any nutrient inputs from the watershed. The cleanest lake on the books is Nla Lake (B); the most-stressed is Yuba Reservoir Midway (F).
Quick Answers for Juab County
Planning a trip? Check special fishing regulations for Nla Lake — or check the official Utah fishing regulations.
All Lakes in Juab County
| Rank | Lake | Grade | Clarity | Phosphorus |
|---|---|---|---|---|
| 1 | Nla Lake | B | 3.9 ft | - |
| 2 | Mona Reservoir | C | 2 ft | - |
| 3 | Yuba Reservoir | C | 3.9 ft | - |
| 4 | Yuba Reservoir Midway | F | 2.8 ft | - |
Other Counties in Utah
See how Juab County stacks up in the national county water-quality rankings, or browse the full directory of graded lakes across all 34 states.
Where to stay near Juab County
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Source: EPA National Aquatic Resource Surveys, 2026.