Dallam County, TX Water Table Trend
Dallam County, TX: the closest actual trend
Cimarron County, OK, 32 miles from Dallam County, is the closest county with a qualifying well, and its water table is declining faster than most declining counties.
No well inside Dallam County clears this site's 15-year qualifying bar, so this is the closest real reading, not a measurement of Dallam County's own aquifer. Worth checking your own well's depth log against it rather than assuming it matches. See Cimarron County, OK'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 Dallam County
Dallam County, Texas covers 1,503 square miles and is home to about 7,526 people. USGS's National Groundwater Monitoring Network covers 1,449 of 3,222 US counties (45%) today; Dallam County isn't one of them yet, see the methodology guide for the exact qualifying bar.