Isabella County, MI Water Table Trend
Isabella County, MI: the closest actual trend
Ingham County, MI, 76 miles from Isabella County, is the closest county with a qualifying well, and its water table is rising, getting shallower over time.
No well inside Isabella County clears this site's 15-year qualifying bar, so this is the closest real reading, not a measurement of Isabella County's own aquifer. Worth checking your own well's depth log against it rather than assuming it matches. 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.
About Isabella County
Isabella County, Michigan covers 573 square miles and is home to about 65,072 people. USGS's National Groundwater Monitoring Network covers 1,449 of 3,222 US counties (45%) today; Isabella County isn't one of them yet, see the methodology guide for the exact qualifying bar.