Hinsdale County Lake Quality
Colorado, 1 lakes, average grade D (Poor)
Hinsdale County has 1 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. On average, Hinsdale County lakes grade D, with phosphorus loading and reduced clarity showing up across most of the dataset.
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 Road Canyon Reservoir (D); the most-stressed is Road Canyon Reservoir (D).
Quick Answers for Hinsdale County
Planning a trip? Check special fishing regulations for Road Canyon Reservoir — or check the official Colorado fishing regulations.
All Lakes in Hinsdale County
| Rank | Lake | Grade | Clarity | Phosphorus |
|---|---|---|---|---|
| 1 | Road Canyon Reservoir | D | 5.6 ft | - |
Other Counties in Colorado
See how Hinsdale County stacks up in the national county water-quality rankings, or browse the full directory of graded lakes across all 12 states.
Where to stay near Hinsdale County
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Source: EPA National Aquatic Resource Surveys, 2026.