Hunterdon County, NJ Water Table Trend
Is the water table dropping in Hunterdon County, NJ?
Hunterdon County's representative monitoring well shows depth to water holding roughly steady, a fitted trend of 0.4 ft per decade over 61 years of readings.
This is one representative well, not a county-wide survey, the same grain limit every page here discloses.
Hunterdon County's source well, in detail
Depth to water at the last reading was 11.5 ft below land surface. Readings span 1965-06-01 to 2026-10-16, 396 measurements from USGS well USGS-402644074563601 (190002-- Bird Obs), part of the National Water Information System. The qualifying bar and the OLS fit behind this trend are documented in the methodology guide.
How Hunterdon County compares nationally
Hunterdon County sits at rank 401st of 1,449 ranked counties, ordered rising-to-declining, so a low number means a rising water table and a high one means fast decline. Hunterdon County, New Jersey is home to about 131,708 people. See the fastest-moving counties guide for how Hunterdon County stacks up against the most extreme cases nationally.
Depth and quality are separate questions
This page answers a depth question, not a quality one. A well in Hunterdon County can be stable in depth and still worth testing for quality, or declining and still test clean, the two are measured separately, and only a direct test settles the second one.