Mercer County, MO Water Table Trend
The nearest real water-table reading to Mercer County, MO
The closest qualifying well to Mercer County is 21 miles away in Grundy County, MO, where the trend runs rising, getting shallower over time.
Mercer County itself has no monitoring well with enough history to call its own trend, so treat this as a regional estimate, not Mercer County's own number. If you own a well here, comparing your own depth log against this regional figure is worth doing before assuming either way. See Grundy 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.
Mercer County, Missouri in brief
About 3,452 people live across Mercer County's 454 square miles, in Missouri. USGS's National Groundwater Monitoring Network covers 1,449 of 3,222 US counties (45%) today; Mercer County isn't one of them yet, see the methodology guide for the exact qualifying bar.