Gilliam County, OR Water Table Trend
What the closest monitoring well shows for Gilliam County
The closest qualifying well to Gilliam County is 20 miles away in Sherman County, OR, where the trend runs rising, getting shallower over time.
Gilliam County itself has no monitoring well with enough history to call its own trend, so treat this as a regional estimate, not Gilliam 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 Sherman County, OR'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.
Gilliam County, Oregon in brief
About 1,971 people live across Gilliam County's 1,205 square miles, in Oregon. USGS's National Groundwater Monitoring Network covers 1,449 of 3,222 US counties (45%) today; Gilliam County isn't one of them yet, see the methodology guide for the exact qualifying bar.