Marshall County, TN Water Table Trend
The nearest real water-table reading to Marshall County, TN
The closest qualifying well to Marshall County is 25 miles away in Lincoln County, TN, where the trend runs rising, getting shallower over time.
Marshall County itself has no monitoring well with enough history to call its own trend, so treat this as a regional estimate, not Marshall 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 Lincoln 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.
Marshall County, Tennessee in brief
About 37,847 people live across Marshall County's 375 square miles, in Tennessee. USGS's National Groundwater Monitoring Network covers 1,449 of 3,222 US counties (45%) today; Marshall County isn't one of them yet, see the methodology guide for the exact qualifying bar.