Santa Isabel Municipio, PR Water Table Trend
Santa Isabel Municipio's groundwater trend, from USGS's own readings
Santa Isabel Municipio's representative monitoring well shows depth to water declining at a typical pace for a declining county, a fitted trend of 2 ft per decade over 66 years of readings.
This is one representative well, not a county-wide survey, the same grain limit every page here discloses.
Santa Isabel Municipio's source well, in detail
Depth to water at the last reading was 46.2 ft below land surface. Readings span 1960-11-01 to 2026-10-05, 692 measurements from USGS well USGS-175829066232200 (Alomar 1 Well, Santa Isabel, Pr), part of the National Water Information System. The qualifying bar and the OLS fit behind this trend are documented in the methodology guide.
How Santa Isabel Municipio compares nationally
Santa Isabel Municipio sits at rank 1175th 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. Santa Isabel Municipio, is home to about 0 people. See the fastest-moving counties guide for how Santa Isabel Municipio stacks up against the most extreme cases nationally.
If you own a well in Santa Isabel Municipio
A dropping water table means a residential pump has to reach deeper and work harder, which shortens its life. In Santa Isabel Municipio, that trend is real, not assumed: 2 ft per decade over 66 years.
Depth and quality are separate questions
This page answers a depth question, not a quality one. A well in Santa Isabel Municipio 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.