Graham County, AZ Water Table Trend
Is the water table dropping in Graham County, AZ?
Graham County's representative monitoring well shows depth to water declining faster than most declining counties, a fitted trend of 20.1 ft per decade over 65 years of readings.
This is one representative well, not a county-wide survey, the same grain limit every page here discloses.
Graham County's source well, in detail
Depth to water at the last reading was 191.3 ft below land surface. Readings span 1961-06-24 to 2026-01-24, 137 measurements from USGS well USGS-325138109372201 (D-06-27 31cdd1 [217]), part of the National Water Information System. The qualifying bar and the OLS fit behind this trend are documented in the methodology guide.
How Graham County compares nationally
Graham County sits at rank 1433rd 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. Graham County, Arizona is home to about 40,242 people. See the fastest-moving counties guide for how Graham County stacks up against the most extreme cases nationally.
If you own a well in Graham County
A dropping water table means a residential pump has to reach deeper and work harder, which shortens its life. In Graham County, that trend is real, not assumed: 20.1 ft per decade over 65 years.
Depth and quality are separate questions
This page answers a depth question, not a quality one. A well in Graham 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.