Calhoun County, MI Water Table Trend
Calhoun County, MI: the closest actual trend
The closest qualifying well to Calhoun County is 23 miles away in Branch County, MI, where the trend runs holding roughly steady.
Calhoun County itself has no monitoring well with enough history to call its own trend, so treat this as a regional estimate, not Calhoun 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 Branch County, MI'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.
Calhoun County, Michigan in brief
About 133,785 people live across Calhoun County's 706 square miles, in Michigan. USGS's National Groundwater Monitoring Network covers 1,449 of 3,222 US counties (45%) today; Calhoun County isn't one of them yet, see the methodology guide for the exact qualifying bar.