Benton County, OR Water Table Trend
Benton County, OR: the closest actual trend
Clackamas County, OR, 76 miles from Benton County, is the closest county with a qualifying well, and its water table is holding roughly steady.
No well inside Benton County clears this site's 15-year qualifying bar, so this is the closest real reading, not a measurement of Benton County's own aquifer. Worth checking your own well's depth log against it rather than assuming it matches. See Clackamas 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.
About Benton County
Benton County, Oregon covers 675 square miles and is home to about 98,899 people. USGS's National Groundwater Monitoring Network covers 1,449 of 3,222 US counties (45%) today; Benton County isn't one of them yet, see the methodology guide for the exact qualifying bar.