Knox County, IN Water Table Trend
Knox County's groundwater trend, from USGS's own readings
Knox County's long-term well puts the trend at 0.2 ft per decade, holding roughly steady, based on 296 measurements since 1967.
This is one representative well, not a county-wide survey, the same grain limit every page here discloses.
Knox County's source well, in detail
Depth to water at the last reading was 11.2 ft below land surface. Readings span 1967-02-21 to 2026-09-30, 296 measurements from USGS well USGS-383247087361001 (Knox 7 (Kn 7)), part of the National Water Information System. The qualifying bar and the OLS fit behind this trend are documented in the methodology guide.
How Knox County compares nationally
Knox County sits at rank 787th 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. Knox County, Indiana is home to about 35,872 people. See the fastest-moving counties guide for how Knox County stacks up against the most extreme cases nationally.
Depth and quality are separate questions
This page answers a depth question, not a quality one. A well in Knox 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.