Rock Island County, IL Water Table Trend
What the closest monitoring well shows for Rock Island County
The closest qualifying well to Rock Island County is 28 miles away in Muscatine County, IA, where the trend runs declining faster than most declining counties.
Rock Island County itself has no monitoring well with enough history to call its own trend, so treat this as a regional estimate, not Rock Island 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 Muscatine 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.
Rock Island County, Illinois in brief
About 142,731 people live across Rock Island County's 427 square miles, in Illinois. USGS's National Groundwater Monitoring Network covers 1,449 of 3,222 US counties (45%) today; Rock Island County isn't one of them yet, see the methodology guide for the exact qualifying bar.