Randolph County, IL Water Table Trend
Randolph County, IL: the closest actual trend
Ste. Genevieve County, MO, 22 miles from Randolph 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 Randolph County clears this site's 15-year qualifying bar, so this is the closest real reading, not a measurement of Randolph County's own aquifer. Worth checking your own well's depth log against it rather than assuming it matches. See Ste. Genevieve 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 Randolph County
Randolph County, Illinois covers 575 square miles and is home to about 29,903 people. USGS's National Groundwater Monitoring Network covers 1,449 of 3,222 US counties (45%) today; Randolph County isn't one of them yet, see the methodology guide for the exact qualifying bar.