Carbon County Lake Quality
Utah, 6 lakes, average grade B (Good)
Carbon County has 6 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. With an average grade of B, Carbon County sits comfortably above the {{stateName}} median.
Most of the county's monitored lakes are shallow — under 50 feet — which means wind keeps the water column mixed all summer and sediment-bound phosphorus releases back into the surface layer whenever the bottom is disturbed. Scofield Reservoir (B) is the cleanest in the county.
Quick Answers for Carbon County
Planning a trip? Check special fishing regulations for Scofield Reservoir — or check the official Utah fishing regulations.
All Lakes in Carbon County
| Rank | Lake | Grade | Clarity | Phosphorus |
|---|---|---|---|---|
| 1 | Scofield Reservoir | B | 12.5 ft | - |
Other Counties in Utah
See how Carbon 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 Carbon County
Top-rated places to stay near Carbon County
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Source: EPA National Aquatic Resource Surveys, 2026.