Woodford County, IL Water Table Trend
Is the water table dropping in Woodford County, IL?
Woodford County's long-term well puts the trend at 0.2 ft per decade, holding roughly steady, based on 58 measurements since 1997.
This is one representative well, not a county-wide survey, the same grain limit every page here discloses.
Woodford County's source well, in detail
Depth to water at the last reading was 8.5 ft below land surface. Readings span 1997-06-30 to 2020-08-21, 58 measurements from USGS well USGS-404603088563501 (27n 2e-36.6h (El Paso)), part of the National Water Information System. The qualifying bar and the OLS fit behind this trend are documented in the methodology guide.
How Woodford County compares nationally
Woodford County sits at rank 505th 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. Woodford County, Illinois is home to about 38,290 people. See the fastest-moving counties guide for how Woodford 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 Woodford 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.