Bay County, MI Water Table Trend
The nearest real water-table reading to Bay County, MI
The closest qualifying well to Bay County is 57 miles away in Lapeer County, MI, where the trend runs rising, getting shallower over time.
Bay County itself has no monitoring well with enough history to call its own trend, so treat this as a regional estimate, not Bay 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 Lapeer 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.
Bay County, Michigan in brief
About 102,651 people live across Bay County's 442 square miles, in Michigan. USGS's National Groundwater Monitoring Network covers 1,449 of 3,222 US counties (45%) today; Bay County isn't one of them yet, see the methodology guide for the exact qualifying bar.