Ziebach County, SD Water Table Trend
The nearest real water-table reading to Ziebach County, SD
Meade County, SD, 58 miles from Ziebach County, is the closest county with a qualifying well, and its water table is rising, getting shallower over time.
No well inside Ziebach County clears this site's 15-year qualifying bar, so this is the closest real reading, not a measurement of Ziebach County's own aquifer. Worth checking your own well's depth log against it rather than assuming it matches. See Meade County, SD'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 Ziebach County
Ziebach County, South Dakota covers 1,961 square miles and is home to about 2,418 people. USGS's National Groundwater Monitoring Network covers 1,449 of 3,222 US counties (45%) today; Ziebach County isn't one of them yet, see the methodology guide for the exact qualifying bar.