Sanilac County, MI Water Table Trend
Sanilac County, MI: the closest actual trend
Huron County, MI, 33 miles from Sanilac County, is the closest county with a qualifying well, and its water table is holding roughly steady.
No well inside Sanilac County clears this site's 15-year qualifying bar, so this is the closest real reading, not a measurement of Sanilac County's own aquifer. Worth checking your own well's depth log against it rather than assuming it matches. See Huron 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 Sanilac County
Sanilac County, Michigan covers 963 square miles and is home to about 40,293 people. USGS's National Groundwater Monitoring Network covers 1,449 of 3,222 US counties (45%) today; Sanilac County isn't one of them yet, see the methodology guide for the exact qualifying bar.