Vermilion Parish, LA Water Table Trend
Vermilion Parish's groundwater trend, from USGS's own readings
Vermilion Parish's representative monitoring well shows depth to water declining, slower than most declining counties, a fitted trend of 0.7 ft per decade over 76 years of readings.
This is one representative well, not a county-wide survey, the same grain limit every page here discloses.
Vermilion Parish's source well, in detail
Depth to water at the last reading was 29.1 ft below land surface. Readings span 1950-02-09 to 2026-06-03, 97 measurements from USGS well USGS-300117092005601 (Ve-501), part of the National Water Information System. The qualifying bar and the OLS fit behind this trend are documented in the methodology guide.
How Vermilion Parish compares nationally
Vermilion Parish sits at rank 1023rd 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. Vermilion Parish, Louisiana is home to about 57,641 people. See the fastest-moving counties guide for how Vermilion Parish stacks up against the most extreme cases nationally.
If you own a well in Vermilion Parish
A dropping water table means a residential pump has to reach deeper and work harder, which shortens its life. In Vermilion Parish, that trend is real, not assumed: 0.7 ft per decade over 76 years.
Depth and quality are separate questions
This page answers a depth question, not a quality one. A well in Vermilion 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.