Hays County, TX Water Table Trend
Is the water table dropping in Hays County, TX?
Over 86 years of USGS readings, the well tracking Hays County's aquifer is rising, getting shallower over time: 0.6 ft per decade.
This is one representative well, not a county-wide survey, the same grain limit every page here discloses.
Hays County's source well, in detail
Depth to water at the last reading was 27.3 ft below land surface. Readings span 1937-10-08 to 2024-03-15, 1361 measurements from USGS well USGS-295443097554201 (Lr-67-01-809 (Tipps)), part of the National Water Information System. The qualifying bar and the OLS fit behind this trend are documented in the methodology guide.
How Hays County compares nationally
Hays County sits at rank 343rd 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. Hays County, Texas is home to about 292,029 people. See the fastest-moving counties guide for how Hays County stacks up against the most extreme cases nationally.
Depth and quality are separate questions
This page answers a depth question, not a quality one. A well in Hays 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.