Madison Parish, LA Water Table Trend
Is the water table dropping in Madison Parish, LA?
Over 51 years of USGS readings, the well tracking Madison Parish's aquifer is declining, slower than most declining counties: 0.6 ft per decade.
This is one representative well, not a county-wide survey, the same grain limit every page here discloses.
Madison Parish's source well, in detail
Depth to water at the last reading was 19.4 ft below land surface. Readings span 1975-09-18 to 2026-08-11, 199 measurements from USGS well USGS-322614091122001 (Ma-64), part of the National Water Information System. The qualifying bar and the OLS fit behind this trend are documented in the methodology guide.
How Madison Parish compares nationally
Madison Parish sits at rank 1002nd 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. Madison Parish, Louisiana is home to about 9,093 people. See the fastest-moving counties guide for how Madison Parish stacks up against the most extreme cases nationally.
If you own a well in Madison Parish
A dropping water table means a residential pump has to reach deeper and work harder, which shortens its life. In Madison Parish, that trend is real, not assumed: 0.6 ft per decade over 51 years.
Depth and quality are separate questions
This page answers a depth question, not a quality one. A well in Madison Parish 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.