Cochise County, AZ Water Table Trend
Cochise County's groundwater trend, from USGS's own readings
Over 85 years of USGS readings, the well tracking Cochise County's aquifer is declining at a typical pace for a declining county: 2 ft per decade.
This is one representative well, not a county-wide survey, the same grain limit every page here discloses.
Cochise County's source well, in detail
Depth to water at the last reading was 98.3 ft below land surface. Readings span 1941-04-02 to 2026-04-21, 129 measurements from USGS well USGS-313421110121401 (D-21-21 27cbd [Bella Vista]), part of the National Water Information System. The qualifying bar and the OLS fit behind this trend are documented in the methodology guide.
How Cochise County compares nationally
Cochise County sits at rank 1173rd 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. Cochise County, Arizona is home to about 125,773 people. See the fastest-moving counties guide for how Cochise County stacks up against the most extreme cases nationally.
If you own a well in Cochise County
A dropping water table means a residential pump has to reach deeper and work harder, which shortens its life. In Cochise County, that trend is real, not assumed: 2 ft per decade over 85 years.
Depth and quality are separate questions
This page answers a depth question, not a quality one. A well in Cochise 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.