Somerset County, PA Water Table Trend
Somerset County, PA: what the water table is actually doing
Over 89 years of USGS readings, the well tracking Somerset County's aquifer is holding roughly steady: 0.2 ft per decade.
This is one representative well, not a county-wide survey, the same grain limit every page here discloses.
Somerset County's source well, in detail
Depth to water at the last reading was 33 ft below land surface. Readings span 1937-04-01 to 2026-06-30, 156 measurements from USGS well USGS-400008079142801 (So 2 Somerset County Observation Well), part of the National Water Information System. The qualifying bar and the OLS fit behind this trend are documented in the methodology guide.
How Somerset County compares nationally
Somerset County sits at rank 469th 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. Somerset County, Pennsylvania is home to about 72,134 people. See the fastest-moving counties guide for how Somerset 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 Somerset 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.