Northumberland County, PA Water Table Trend
Northumberland County, PA: what the water table is actually doing
Over 25 years of USGS readings, the well tracking Northumberland County's aquifer is rising, getting shallower over time: 1.6 ft per decade.
One well stands in for Northumberland County's whole aquifer here, the honest simplification every page on this site carries.
What the well actually measured
The most recent reading put water 22.8 ft below land surface. Readings span 2001-03-19 to 2026-08-14, 217 measurements from USGS well USGS-404239076362001 (Nu 567 Northumberland County Observation Well), part of the National Water Information System. The qualifying bar and the OLS fit behind this trend are documented in the methodology guide.
Where Northumberland County ranks
Of the 1,449 US counties with a usable trend, Northumberland County ranks 165th from fastest-rising to fastest-declining, 1 is the fastest-rising water table measured, 1449 the fastest-declining. About 90,027 people live in Northumberland County, Pennsylvania. See the fastest-moving counties guide for how Northumberland County stacks up against the most extreme cases nationally.
A dropping table says nothing about water quality
Whether Northumberland County's water table is rising or falling is independent of what's actually in the water. Depletion can concentrate naturally-occurring minerals, so it's worth checking directly with a water test rather than assuming a depth trend says anything about quality.