Ionia County, MI Water Table Trend
Ionia County, MI: the closest actual trend
The closest qualifying well to Ionia County is 43 miles away in Ingham County, MI, where the trend runs rising, getting shallower over time.
Ionia County itself has no monitoring well with enough history to call its own trend, so treat this as a regional estimate, not Ionia 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 Ingham 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.
Ionia County, Michigan in brief
About 66,250 people live across Ionia County's 571 square miles, in Michigan. USGS's National Groundwater Monitoring Network covers 1,449 of 3,222 US counties (45%) today; Ionia County isn't one of them yet, see the methodology guide for the exact qualifying bar.