Monroe County, IL Water Table Trend
Monroe County, IL: the closest actual trend
St. Clair County, IL, 19 miles from Monroe County, is the closest county with a qualifying well, and its water table is holding roughly steady.
No well inside Monroe County clears this site's 15-year qualifying bar, so this is the closest real reading, not a measurement of Monroe County's own aquifer. Worth checking your own well's depth log against it rather than assuming it matches. See St. Clair County, IL'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 Monroe County
Monroe County, Illinois covers 385 square miles and is home to about 34,969 people. USGS's National Groundwater Monitoring Network covers 1,449 of 3,222 US counties (45%) today; Monroe County isn't one of them yet, see the methodology guide for the exact qualifying bar.