Crawford County Lake Quality
Ohio, 1 lakes, average grade B (Good)
Only 1 lakes in Crawford 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. With an average grade of B, Crawford County sits comfortably above the Ohio median.
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 Powers Reservoir (B); the most-stressed is Powers Reservoir (B).
Quick Answers for Crawford County
Planning a trip? Check special fishing regulations for Powers Reservoir — or check the official Ohio fishing regulations.
All Lakes in Crawford County
| Rank | Lake | Grade | Clarity | Phosphorus |
|---|---|---|---|---|
| 1 | Powers Reservoir | B | - | 35.7 µg/L |
Other Counties in Ohio
See how Crawford County stacks up in the national county water-quality rankings, or browse the full directory of graded lakes across all 36 states and 2 Canadian provinces.
Where to stay near Crawford County
Top-rated places to stay near Crawford County
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Source: EPA National Aquatic Resource Surveys, 2026.