Granite County, MT Water Table Trend
Granite County, MT: the closest actual trend
Ravalli County, MT, 39 miles from Granite County, is the closest county with a qualifying well, and its water table is holding roughly steady.
No well inside Granite County clears this site's 15-year qualifying bar, so this is the closest real reading, not a measurement of Granite County's own aquifer. Worth checking your own well's depth log against it rather than assuming it matches. See Ravalli County, MT'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 Granite County
Granite County, Montana covers 1,727 square miles and is home to about 3,602 people. USGS's National Groundwater Monitoring Network covers 1,449 of 3,222 US counties (45%) today; Granite County isn't one of them yet, see the methodology guide for the exact qualifying bar.