Ontonagon County, MI Water Table Trend
Ontonagon County, MI: the closest actual trend
Vilas County, WI, 55 miles from Ontonagon County, is the closest county with a qualifying well, and its water table is holding roughly steady.
No well inside Ontonagon County clears this site's 15-year qualifying bar, so this is the closest real reading, not a measurement of Ontonagon County's own aquifer. Worth checking your own well's depth log against it rather than assuming it matches. See Vilas County, WI'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 Ontonagon County
Ontonagon County, Michigan covers 1,311 square miles and is home to about 5,824 people. USGS's National Groundwater Monitoring Network covers 1,449 of 3,222 US counties (45%) today; Ontonagon County isn't one of them yet, see the methodology guide for the exact qualifying bar.