Charles Mix County, SD Water Table Trend
Charles Mix County, SD: the closest actual trend
The closest qualifying well to Charles Mix County is 23 miles away in Boyd County, NE, where the trend runs holding roughly steady.
Charles Mix County itself has no monitoring well with enough history to call its own trend, so treat this as a regional estimate, not Charles Mix 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 Boyd County, NE'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.
Charles Mix County, South Dakota in brief
About 9,343 people live across Charles Mix County's 1,097 square miles, in South Dakota. USGS's National Groundwater Monitoring Network covers 1,449 of 3,222 US counties (45%) today; Charles Mix County isn't one of them yet, see the methodology guide for the exact qualifying bar.