Sussex County, DE Water Table Trend
Sussex County's groundwater trend, from USGS's own readings
Over 57 years of USGS readings, the well tracking Sussex County's aquifer is holding roughly steady: 0.4 ft per decade.
One well stands in for Sussex 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 11.3 ft below land surface. Readings span 1970-01-31 to 2026-10-02, 1187 measurements from USGS well USGS-383730075213501 (Pf24-02), part of the National Water Information System. The qualifying bar and the OLS fit behind this trend are documented in the methodology guide.
Where Sussex County ranks
Of the 1,449 US counties with a usable trend, Sussex County ranks 903rd from fastest-rising to fastest-declining, 1 is the fastest-rising water table measured, 1449 the fastest-declining. About 271,134 people live in Sussex County, Delaware. See the fastest-moving counties guide for how Sussex County stacks up against the most extreme cases nationally.
A dropping table says nothing about water quality
Whether Sussex 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.