Mason County, MI Water Table Trend
Mason County, MI: the closest actual trend
The closest qualifying well to Mason County is 24 miles away in Oceana County, MI, where the trend runs holding roughly steady.
Mason County itself has no monitoring well with enough history to call its own trend, so treat this as a regional estimate, not Mason 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 Oceana 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.
Mason County, Michigan in brief
About 29,093 people live across Mason County's 495 square miles, in Michigan. USGS's National Groundwater Monitoring Network covers 1,449 of 3,222 US counties (45%) today; Mason County isn't one of them yet, see the methodology guide for the exact qualifying bar.