Logan County, ND Water Table Trend
Logan County's groundwater trend, from USGS's own readings
Over 43 years of USGS readings, the well tracking Logan County's aquifer is rising, getting shallower over time: 0.6 ft per decade.
This is one representative well, not a county-wide survey, the same grain limit every page here discloses.
Logan County's source well, in detail
Depth to water at the last reading was 18.6 ft below land surface. Readings span 1978-11-15 to 2021-08-11, 423 measurements from USGS well USGS-463417099271002 (136-070-26bbb2), part of the National Water Information System. The qualifying bar and the OLS fit behind this trend are documented in the methodology guide.
How Logan County compares nationally
Logan County sits at rank 325th 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. Logan County, North Dakota is home to about 1,880 people. See the fastest-moving counties guide for how Logan 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 Logan 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.