Carroll County Lake Quality
Ohio, 1 lakes, average grade D (Poor)
Only 1 lakes in Carroll 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. On average, Carroll 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 Leesville Lake (D); the most-stressed is Leesville Lake (D).
Quick Answers for Carroll County
Planning a trip? Check special fishing regulations for Leesville Lake — or check the official Ohio fishing regulations.
All Lakes in Carroll County
| Rank | Lake | Grade | Clarity | Phosphorus |
|---|---|---|---|---|
| 1 | Leesville Lake | D | 5 ft | - |
Other Counties in Ohio
See how Carroll County stacks up in the national county water-quality rankings, or browse the full directory of graded lakes across all 15 states.
Where to stay near Carroll County
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Source: EPA National Aquatic Resource Surveys, 2026.