De Soto Parish, LA Water Table Trend
De Soto Parish's groundwater trend, from USGS's own readings
De Soto Parish's representative monitoring well shows depth to water declining faster than most declining counties, a fitted trend of 7.8 ft per decade over 67 years of readings.
This is one representative well, not a county-wide survey, the same grain limit every page here discloses.
De Soto Parish's source well, in detail
Depth to water at the last reading was 132.9 ft below land surface. Readings span 1959-10-16 to 2026-09-02, 92 measurements from USGS well USGS-321813093470501 (Ds-329), part of the National Water Information System. The qualifying bar and the OLS fit behind this trend are documented in the methodology guide.
How De Soto Parish compares nationally
De Soto Parish sits at rank 1364th 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. De Soto Parish, Louisiana is home to about 27,274 people. See the fastest-moving counties guide for how De Soto Parish stacks up against the most extreme cases nationally.
If you own a well in De Soto Parish
A dropping water table means a residential pump has to reach deeper and work harder, which shortens its life. In De Soto Parish, that trend is real, not assumed: 7.8 ft per decade over 67 years.
Depth and quality are separate questions
This page answers a depth question, not a quality one. A well in De Soto 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.