Luna County, NM Water Table Trend
Luna County's groundwater trend, from USGS's own readings
Luna County's long-term well puts the trend at 1 ft per decade, declining, slower than most declining counties, based on 192 measurements since 1931.
This is one representative well, not a county-wide survey, the same grain limit every page here discloses.
Luna County's source well, in detail
Depth to water at the last reading was 38.1 ft below land surface. Readings span 1931-04-11 to 2026-01-14, 192 measurements from USGS well USGS-322539107563901 (22s.11w.02.210 580), part of the National Water Information System. The qualifying bar and the OLS fit behind this trend are documented in the methodology guide.
How Luna County compares nationally
Luna County sits at rank 1078th 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. Luna County, New Mexico is home to about 25,878 people. See the fastest-moving counties guide for how Luna County stacks up against the most extreme cases nationally.
If you own a well in Luna County
A dropping water table means a residential pump has to reach deeper and work harder, which shortens its life. In Luna County, that trend is real, not assumed: 1 ft per decade over 95 years.
Depth and quality are separate questions
This page answers a depth question, not a quality one. A well in Luna 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.