Jefferson County, CO Water Table Trend
The nearest real water-table reading to Jefferson County, CO
The closest qualifying well to Jefferson County is 24 miles away in Douglas County, CO, where the trend runs declining faster than most declining counties.
Jefferson County itself has no monitoring well with enough history to call its own trend, so treat this as a regional estimate, not Jefferson 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 Douglas County, CO'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.
Jefferson County, Colorado in brief
About 578,533 people live across Jefferson County's 764 square miles, in Colorado. USGS's National Groundwater Monitoring Network covers 1,449 of 3,222 US counties (45%) today; Jefferson County isn't one of them yet, see the methodology guide for the exact qualifying bar.