Zavala County Lake Quality
Texas, 1 lakes, average grade B (Good)
Zavala County has 1 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-wide average lands at B — solid water quality with most lakes carrying clear summer transparency and low-to-moderate phosphorus.
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. Lake Averhoff Upstream Tpwd Ramp (B) is the cleanest in the county.
Quick Answers for Zavala County
Planning a trip? Check special fishing regulations for Lake Averhoff Upstream Tpwd Ramp — or check the official Texas fishing regulations.
All Lakes in Zavala County
| Rank | Lake | Grade | Clarity | Phosphorus |
|---|---|---|---|---|
| 1 | Lake Averhoff Upstream Tpwd Ramp | B | 8.2 ft | 30 µg/L |
Other Counties in Texas
See how Zavala 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 Zavala County
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Source: EPA National Aquatic Resource Surveys, 2026.