Sioux County, IA Water Table Trend
What the closest monitoring well shows for Sioux County
The closest qualifying well to Sioux County is 51 miles away in Minnehaha County, SD, where the trend runs holding roughly steady.
Sioux County itself has no monitoring well with enough history to call its own trend, so treat this as a regional estimate, not Sioux 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 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.
Sioux County, Iowa in brief
About 36,554 people live across Sioux County's 768 square miles, in Iowa. USGS's National Groundwater Monitoring Network covers 1,449 of 3,222 US counties (45%) today; Sioux County isn't one of them yet, see the methodology guide for the exact qualifying bar.