Columbus County, NC Water Table Trend
Columbus County, NC: the closest actual trend
Brunswick County, NC, 28 miles from Columbus 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 Columbus County clears this site's 15-year qualifying bar, so this is the closest real reading, not a measurement of Columbus County's own aquifer. Worth checking your own well's depth log against it rather than assuming it matches. See Brunswick County, NC'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 Columbus County
Columbus County, North Carolina covers 938 square miles and is home to about 50,054 people. USGS's National Groundwater Monitoring Network covers 1,449 of 3,222 US counties (45%) today; Columbus County isn't one of them yet, see the methodology guide for the exact qualifying bar.