Grainger County, TN Water Table Trend
Grainger County, TN: the closest actual trend
Bell County, KY, 33 miles from Grainger County, is the closest county with a qualifying well, and its water table is rising, getting shallower over time.
No well inside Grainger County clears this site's 15-year qualifying bar, so this is the closest real reading, not a measurement of Grainger County's own aquifer. Worth checking your own well's depth log against it rather than assuming it matches. See Bell County, KY'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 Grainger County
Grainger County, Tennessee covers 281 square miles and is home to about 25,073 people. USGS's National Groundwater Monitoring Network covers 1,449 of 3,222 US counties (45%) today; Grainger County isn't one of them yet, see the methodology guide for the exact qualifying bar.