Mills County, IA Water Table Trend
Mills County, IA: the closest actual trend
Montgomery County, IA, 24 miles from Mills County, is the closest county with a qualifying well, and its water table is rising, getting shallower over time.
No well inside Mills County clears this site's 15-year qualifying bar, so this is the closest real reading, not a measurement of Mills County's own aquifer. Worth checking your own well's depth log against it rather than assuming it matches. See Montgomery County, IA'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 Mills County
Mills County, Iowa covers 437 square miles and is home to about 14,717 people. USGS's National Groundwater Monitoring Network covers 1,449 of 3,222 US counties (45%) today; Mills County isn't one of them yet, see the methodology guide for the exact qualifying bar.