Johnson County, KS Water Table Trend
The nearest real water-table reading to Johnson County, KS
Jackson County, MO, 27 miles from Johnson County, is the closest county with a qualifying well, and its water table is declining at a typical pace for a declining county.
No well inside Johnson County clears this site's 15-year qualifying bar, so this is the closest real reading, not a measurement of Johnson County's own aquifer. Worth checking your own well's depth log against it rather than assuming it matches. See Jackson County, MO's full page. See the no-data guide for why a county this close to a qualifying well still doesn't get its own number.
About Johnson County
Johnson County, Kansas covers 474 square miles and is home to about 632,276 people. USGS's National Groundwater Monitoring Network covers 1,449 of 3,222 US counties (45%) today; Johnson County isn't one of them yet, see the methodology guide for the exact qualifying bar.