Decatur County, IA Water Table Trend
What the closest monitoring well shows for Decatur County
The closest qualifying well to Decatur County is 29 miles away in Harrison County, MO, where the trend runs declining at a typical pace for a declining county.
Decatur County itself has no monitoring well with enough history to call its own trend, so treat this as a regional estimate, not Decatur 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 Harrison County, MO'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.
Decatur County, Iowa in brief
About 7,656 people live across Decatur County's 532 square miles, in Iowa. USGS's National Groundwater Monitoring Network covers 1,449 of 3,222 US counties (45%) today; Decatur County isn't one of them yet, see the methodology guide for the exact qualifying bar.