Douglas County, MO Water Table Trend
Douglas County's groundwater trend, from USGS's own readings
Douglas County's long-term well puts the trend at 10.8 ft per decade, rising, getting shallower over time, based on 45 measurements since 2010.
This is one representative well, not a county-wide survey, the same grain limit every page here discloses.
Douglas County's source well, in detail
Depth to water at the last reading was 290.5 ft below land surface. Readings span 2010-06-30 to 2026-08-03, 45 measurements from USGS well MO005-365602092395101 (Ava), part of the National Water Information System. The qualifying bar and the OLS fit behind this trend are documented in the methodology guide.
How Douglas County compares nationally
Douglas County sits at rank 26th 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. Douglas County, Missouri is home to about 12,290 people. See the fastest-moving counties guide for how Douglas 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 Douglas 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.