Sherman County, OR Water Table Trend
Is the water table dropping in Sherman County, OR?
Over 39 years of USGS readings, the well tracking Sherman County's aquifer is rising, getting shallower over time: 1.8 ft per decade.
This is one representative well, not a county-wide survey, the same grain limit every page here discloses.
Sherman County's source well, in detail
Depth to water at the last reading was 12.8 ft below land surface. Readings span 1978-08-26 to 2017-06-26, 13 measurements from USGS well USGS-452646120451201 (01s/16e-36aba1), part of the National Water Information System. The qualifying bar and the OLS fit behind this trend are documented in the methodology guide.
How Sherman County compares nationally
Sherman County sits at rank 142nd 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. Sherman County, Oregon is home to about 2,002 people. See the fastest-moving counties guide for how Sherman 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 Sherman 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.