Oswego County, NY Water Table Trend
Oswego County's groundwater trend, from USGS's own readings
Over 27 years of USGS readings, the well tracking Oswego County's aquifer is holding roughly steady: 0.1 ft per decade.
This is one representative well, not a county-wide survey, the same grain limit every page here discloses.
Oswego County's source well, in detail
Depth to water at the last reading was 22.8 ft below land surface. Readings span 1999-09-24 to 2026-07-07, 117 measurements from USGS well USGS-432148076225102 (Local Number, Ow-5014, Near Volney 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 Oswego County compares nationally
Oswego County sits at rank 539th 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. Oswego County, New York is home to about 118,305 people. See the fastest-moving counties guide for how Oswego 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 Oswego 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.