Washington County, IN Water Table Trend
Washington County, IN: what the water table is actually doing
Washington County's long-term well puts the trend at 1.5 ft per decade, declining at a typical pace for a declining county, based on 125 measurements since 1989.
This is one representative well, not a county-wide survey, the same grain limit every page here discloses.
Washington County's source well, in detail
Depth to water at the last reading was 75.8 ft below land surface. Readings span 1989-07-31 to 2025-11-06, 125 measurements from USGS well USGS-383012086124501 (Washington 2 (Wa 2)), part of the National Water Information System. The qualifying bar and the OLS fit behind this trend are documented in the methodology guide.
How Washington County compares nationally
Washington County sits at rank 1138th 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. Washington County, Indiana is home to about 28,345 people. See the fastest-moving counties guide for how Washington County stacks up against the most extreme cases nationally.
If you own a well in Washington County
A dropping water table means a residential pump has to reach deeper and work harder, which shortens its life. In Washington County, that trend is real, not assumed: 1.5 ft per decade over 36 years.
Depth and quality are separate questions
This page answers a depth question, not a quality one. A well in Washington 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.