Hillsborough County, NH Water Table Trend
Hillsborough County, NH: what the water table is actually doing
Hillsborough County's representative monitoring well shows depth to water holding roughly steady, a fitted trend of 0.2 ft per decade over 53 years of readings.
One well stands in for Hillsborough 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 27.7 ft below land surface. Readings span 1964-06-01 to 2017-06-01, 634 measurements from USGS well USGS-424800071295301 (Nh-Naw 218), part of the National Water Information System. The qualifying bar and the OLS fit behind this trend are documented in the methodology guide.
Where Hillsborough County ranks
Of the 1,449 US counties with a usable trend, Hillsborough County ranks 499th from fastest-rising to fastest-declining, 1 is the fastest-rising water table measured, 1449 the fastest-declining. About 430,462 people live in Hillsborough County, New Hampshire. See the fastest-moving counties guide for how Hillsborough County stacks up against the most extreme cases nationally.
A dropping table says nothing about water quality
Whether Hillsborough 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.