Weber County Lake Quality
Utah, 13 lakes, average grade B (Good)
Only 13 lakes in Weber County carry an active grade. The county-level summary is therefore representative of those specific lakes, not necessarily of every water body in the county. The county-wide average lands at B — solid water quality with most lakes carrying clear summer transparency and low-to-moderate phosphorus.
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 Causey Reservoir (A); the most-stressed is Nla Lake (F).
Quick Answers for Weber County
Planning a trip? Check special fishing regulations for Causey Reservoir — or check the official Utah fishing regulations.
All Lakes in Weber County
| Rank | Lake | Grade | Clarity | Phosphorus |
|---|---|---|---|---|
| 1 | Causey Reservoir | A | 15.1 ft | - |
| 2 | Pineview Lake | A | 10.8 ft | - |
| 3 | Pineview North Arm Lake | B | 11.9 ft | - |
| 4 | Pineview South Arm Lake | C | 9.1 ft | - |
| 5 | Bear R Bay Outflow Lake | C | - | 52 µg/L |
| 6 | Nla Lake | F | 0.1 ft | - |
Other Counties in Utah
See how Weber 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 Weber County
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Source: EPA National Aquatic Resource Surveys, 2026.