Clay County, MN Water Table Trend
Clay County, MN: the closest actual trend
The closest qualifying well to Clay County is 36 miles away in Cass County, ND, where the trend runs rising, getting shallower over time.
Clay County itself has no monitoring well with enough history to call its own trend, so treat this as a regional estimate, not Clay 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 Cass County, ND'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.
Clay County, Minnesota in brief
About 66,848 people live across Clay County's 1,045 square miles, in Minnesota. USGS's National Groundwater Monitoring Network covers 1,449 of 3,222 US counties (45%) today; Clay County isn't one of them yet, see the methodology guide for the exact qualifying bar.