Macoupin County, IL Water Table Trend
The nearest real water-table reading to Macoupin County, IL
Madison County, IL, 30 miles from Macoupin County, is the closest county with a qualifying well, and its water table is rising, getting shallower over time.
No well inside Macoupin County clears this site's 15-year qualifying bar, so this is the closest real reading, not a measurement of Macoupin County's own aquifer. Worth checking your own well's depth log against it rather than assuming it matches. See Madison 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 Macoupin County
Macoupin County, Illinois covers 863 square miles and is home to about 43,895 people. USGS's National Groundwater Monitoring Network covers 1,449 of 3,222 US counties (45%) today; Macoupin County isn't one of them yet, see the methodology guide for the exact qualifying bar.