Lake County, MT Water Table Trend
Lake County, MT: the closest actual trend
The closest qualifying well to Lake County is 87 miles away in Lewis and Clark County, MT, where the trend runs declining at a typical pace for a declining county.
Lake County itself has no monitoring well with enough history to call its own trend, so treat this as a regional estimate, not Lake 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 Lewis and Clark 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.
Lake County, Montana in brief
About 33,403 people live across Lake County's 1,491 square miles, in Montana. USGS's National Groundwater Monitoring Network covers 1,449 of 3,222 US counties (45%) today; Lake County isn't one of them yet, see the methodology guide for the exact qualifying bar.