Jack County Lake Quality
Texas, 2 lakes, average grade C (Fair)
Jack County has 2 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. The county average is C — the middle of the rubric, with one or two lakes pulling the average up or down depending on year.
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 Lake Jacksboro Mid Lake (B); the most-stressed is Lost Creek Reservoir Mid Lake (C).
Quick Answers for Jack County
Planning a trip? Check special fishing regulations for Lake Jacksboro Mid Lake — or check the official Texas fishing regulations.
All Lakes in Jack County
| Rank | Lake | Grade | Clarity | Phosphorus |
|---|---|---|---|---|
| 1 | Lake Jacksboro Mid Lake | B | 3.6 ft | 20 µg/L |
| 2 | Lost Creek Reservoir Mid Lake | C | 4.3 ft | - |
Other Counties in Texas
See how Jack County stacks up in the national county water-quality rankings, or browse the full directory of graded lakes across all 17 states.
Where to stay near Jack County
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Source: EPA National Aquatic Resource Surveys, 2026.