Canyon County, ID Water Table Trend
The nearest real water-table reading to Canyon County, ID
Ada County, ID, 26 miles from Canyon County, is the closest county with a qualifying well, and its water table is rising, getting shallower over time.
No well inside Canyon County clears this site's 15-year qualifying bar, so this is the closest real reading, not a measurement of Canyon County's own aquifer. Worth checking your own well's depth log against it rather than assuming it matches. See Ada County, ID'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 Canyon County
Canyon County, Idaho covers 587 square miles and is home to about 266,892 people. USGS's National Groundwater Monitoring Network covers 1,449 of 3,222 US counties (45%) today; Canyon County isn't one of them yet, see the methodology guide for the exact qualifying bar.