Island County, WA Water Table Trend
The nearest real water-table reading to Island County, WA
Kitsap County, WA, 36 miles from Island County, is the closest county with a qualifying well, and its water table is rising, getting shallower over time.
No well inside Island County clears this site's 15-year qualifying bar, so this is the closest real reading, not a measurement of Island County's own aquifer. Worth checking your own well's depth log against it rather than assuming it matches. See Kitsap County, WA'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 Island County
Island County, Washington covers 209 square miles and is home to about 86,478 people. USGS's National Groundwater Monitoring Network covers 1,449 of 3,222 US counties (45%) today; Island County isn't one of them yet, see the methodology guide for the exact qualifying bar.