Allegany County, NY Water Table Trend
Allegany County's groundwater trend, from USGS's own readings
Allegany County's long-term well puts the trend at 0.5 ft per decade, holding roughly steady, based on 147 measurements since 1994.
One well stands in for Allegany County's whole aquifer here, the honest simplification every page on this site carries.
What the well actually measured
This well is artesian, water currently stands 0.4 ft above land surface (flowing/artesian), not drawn up from a depth. Readings span 1994-07-13 to 2026-10-20, 147 measurements from USGS well USGS-421544078021301 (Local Number, Ag-262, Near Belmont Ny), part of the National Water Information System. The qualifying bar and the OLS fit behind this trend are documented in the methodology guide.
Where Allegany County ranks
Of the 1,449 US counties with a usable trend, Allegany County ranks 371st from fastest-rising to fastest-declining, 1 is the fastest-rising water table measured, 1449 the fastest-declining. About 47,299 people live in Allegany County, New York. See the fastest-moving counties guide for how Allegany County stacks up against the most extreme cases nationally.
A dropping table says nothing about water quality
Whether Allegany 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.