Turner County, SD Water Table Trend
Turner County, SD: the closest actual trend
Minnehaha County, SD, 31 miles from Turner County, is the closest county with a qualifying well, and its water table is holding roughly steady.
No well inside Turner County clears this site's 15-year qualifying bar, so this is the closest real reading, not a measurement of Turner County's own aquifer. Worth checking your own well's depth log against it rather than assuming it matches. See Minnehaha 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 Turner County
Turner County, South Dakota covers 617 square miles and is home to about 9,087 people. USGS's National Groundwater Monitoring Network covers 1,449 of 3,222 US counties (45%) today; Turner County isn't one of them yet, see the methodology guide for the exact qualifying bar.