Sumner County, TN Water Table Trend
Sumner County, TN: the closest actual trend
The closest qualifying well to Sumner County is 58 miles away in Putnam County, TN, where the trend runs holding roughly steady.
Sumner County itself has no monitoring well with enough history to call its own trend, so treat this as a regional estimate, not Sumner 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 Putnam County, TN'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.
Sumner County, Tennessee in brief
About 211,721 people live across Sumner County's 529 square miles, in Tennessee. USGS's National Groundwater Monitoring Network covers 1,449 of 3,222 US counties (45%) today; Sumner County isn't one of them yet, see the methodology guide for the exact qualifying bar.