Dukes County, MA Water Table Trend
Is the water table dropping in Dukes County, MA?
Dukes County's long-term well puts the trend at 0 ft per decade, holding roughly steady, based on 587 measurements since 1976.
One well stands in for Dukes 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 20 ft below land surface. Readings span 1976-12-16 to 2026-09-23, 587 measurements from USGS well USGS-412346070353403 (Ma-Enw 52 Edgartown, Ma), part of the National Water Information System. The qualifying bar and the OLS fit behind this trend are documented in the methodology guide.
Where Dukes County ranks
Of the 1,449 US counties with a usable trend, Dukes County ranks 692nd from fastest-rising to fastest-declining, 1 is the fastest-rising water table measured, 1449 the fastest-declining. About 21,061 people live in Dukes County, Massachusetts. See the fastest-moving counties guide for how Dukes County stacks up against the most extreme cases nationally.
A dropping table says nothing about water quality
Whether Dukes 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.