Spink County, SD Water Table Trend
Spink County, SD: the closest actual trend
The closest qualifying well to Spink County is 35 miles away in Beadle County, SD, where the trend runs rising, getting shallower over time.
Spink County itself has no monitoring well with enough history to call its own trend, so treat this as a regional estimate, not Spink 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 Beadle 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.
Spink County, South Dakota in brief
About 6,108 people live across Spink County's 1,503 square miles, in South Dakota. USGS's National Groundwater Monitoring Network covers 1,449 of 3,222 US counties (45%) today; Spink County isn't one of them yet, see the methodology guide for the exact qualifying bar.