Travis County Lake Quality
Texas, 3 lakes, average grade C (Fair)
Only 3 lakes in Travis 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. The county average is C — the middle of the rubric, with one or two lakes pulling the average up or down depending on year.
Most of the county's monitored lakes are shallow — under 50 feet — which means wind keeps the water column mixed all summer and sediment-bound phosphorus releases back into the surface layer whenever the bottom is disturbed. Walter E Long Lake Eastern Arm (C) is the cleanest in the county.
Quick Answers for Travis County
Planning a trip? Check special fishing regulations for Walter E Long Lake Eastern Arm — or check the official Texas fishing regulations.
All Lakes in Travis County
| Rank | Lake | Grade | Clarity | Phosphorus |
|---|---|---|---|---|
| 1 | Walter E Long Lake Eastern Arm | C | 4.2 ft | 30 µg/L |
| 2 | Walter E Long Lake Mid Lake | C | 3.6 ft | 30 µg/L |
| 3 | Walter E Long Lake Western Arm | C | 4.9 ft | 30 µg/L |
Other Counties in Texas
See how Travis 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 Travis County
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Source: EPA National Aquatic Resource Surveys, 2026.