Hamilton County, IA Water Table Trend
The nearest real water-table reading to Hamilton County, IA
The closest qualifying well to Hamilton County is 33 miles away in Franklin County, IA, where the trend runs holding roughly steady.
Hamilton County itself has no monitoring well with enough history to call its own trend, so treat this as a regional estimate, not Hamilton 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 Franklin County, IA'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.
Hamilton County, Iowa in brief
About 14,856 people live across Hamilton County's 577 square miles, in Iowa. USGS's National Groundwater Monitoring Network covers 1,449 of 3,222 US counties (45%) today; Hamilton County isn't one of them yet, see the methodology guide for the exact qualifying bar.