Columbia County, WA Water Table Trend
What the closest monitoring well shows for Columbia County
The closest qualifying well to Columbia County is 27 miles away in Walla Walla County, WA, where the trend runs declining faster than most declining counties.
Columbia County itself has no monitoring well with enough history to call its own trend, so treat this as a regional estimate, not Columbia 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 Walla Walla County, WA'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.
Columbia County, Washington in brief
About 4,025 people live across Columbia County's 869 square miles, in Washington. USGS's National Groundwater Monitoring Network covers 1,449 of 3,222 US counties (45%) today; Columbia County isn't one of them yet, see the methodology guide for the exact qualifying bar.