Johnson County Lake Quality
Texas, 1 lakes, average grade D (Poor)
Only 1 lakes in Johnson 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, Johnson 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 Pat Cleburne Reservoir (D); the most-stressed is Pat Cleburne Reservoir (D).
Quick Answers for Johnson County
Planning a trip? Check special fishing regulations for Pat Cleburne Reservoir — or check the official Texas fishing regulations.
All Lakes in Johnson County
| Rank | Lake | Grade | Clarity | Phosphorus |
|---|---|---|---|---|
| 1 | Pat Cleburne Reservoir | D | 2.4 ft | 50 µg/L |
Other Counties in Texas
See how Johnson County stacks up in the national county water-quality rankings, or browse the full directory of graded lakes across all 17 states.
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Source: EPA National Aquatic Resource Surveys, 2026.