Lewis County, NY Water Table Trend
Is the water table dropping in Lewis County, NY?
Lewis County's representative monitoring well shows depth to water holding roughly steady, a fitted trend of 0.1 ft per decade over 22 years of readings.
This is one representative well, not a county-wide survey, the same grain limit every page here discloses.
Lewis County's source well, in detail
Depth to water at the last reading was 22.6 ft below land surface. Readings span 2004-10-27 to 2026-08-11, 108 measurements from USGS well USGS-440939075191301 (Local Number, L-174, Harrisville Ny), part of the National Water Information System. The qualifying bar and the OLS fit behind this trend are documented in the methodology guide.
How Lewis County compares nationally
Lewis County sits at rank 701st 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. Lewis County, New York is home to about 26,570 people. See the fastest-moving counties guide for how Lewis 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 Lewis 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.