Uvalde County, TX Water Table Trend
Uvalde County's groundwater trend, from USGS's own readings
Uvalde County's long-term well puts the trend at 5.5 ft per decade, declining faster than most declining counties, based on 63 measurements since 1992.
This is one representative well, not a county-wide survey, the same grain limit every page here discloses.
Uvalde County's source well, in detail
Depth to water at the last reading was 37.6 ft below land surface. Readings span 1992-01-29 to 2026-09-10, 63 measurements from USGS well USGS-292628099401401 (Yp-69-35-602 (Frio Reference Well)), part of the National Water Information System. The qualifying bar and the OLS fit behind this trend are documented in the methodology guide.
How Uvalde County compares nationally
Uvalde County sits at rank 1315th of 1,449 ranked counties, ordered rising-to-declining, so a low number means a rising water table and a high one means fast decline. Uvalde County, Texas is home to about 25,138 people. See the fastest-moving counties guide for how Uvalde County stacks up against the most extreme cases nationally.
If you own a well in Uvalde County
A dropping water table means a residential pump has to reach deeper and work harder, which shortens its life. In Uvalde County, that trend is real, not assumed: 5.5 ft per decade over 35 years.
Depth and quality are separate questions
This page answers a depth question, not a quality one. A well in Uvalde County can be stable in depth and still worth testing for quality, or declining and still test clean, the two are measured separately, and only a direct test settles the second one.