Benton County, IN Water Table Trend
Benton County, IN: what the water table is actually doing
Over 45 years of USGS readings, the well tracking Benton County's aquifer is holding roughly steady: 0.4 ft per decade.
This is one representative well, not a county-wide survey, the same grain limit every page here discloses.
Benton County's source well, in detail
Depth to water at the last reading was 15.3 ft below land surface. Readings span 1981-11-05 to 2026-07-08, 304 measurements from USGS well USGS-402851087213501 (Benton 4 (Be 4)), part of the National Water Information System. The qualifying bar and the OLS fit behind this trend are documented in the methodology guide.
How Benton County compares nationally
Benton County sits at rank 908th 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. Benton County, Indiana is home to about 8,853 people. See the fastest-moving counties guide for how Benton 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 Benton 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.