Cass County, ND Water Table Trend
Cass County's groundwater trend, from USGS's own readings
Cass County's long-term well puts the trend at 1.3 ft per decade, rising, getting shallower over time, based on 379 measurements since 1982.
One well stands in for Cass County's whole aquifer here, the honest simplification every page on this site carries.
What the well actually measured
The most recent reading put water 27.4 ft below land surface. Readings span 1982-09-13 to 2021-07-12, 379 measurements from USGS well USGS-471326097332902 (143-054-08bbb2), part of the National Water Information System. The qualifying bar and the OLS fit behind this trend are documented in the methodology guide.
Where Cass County ranks
Of the 1,449 US counties with a usable trend, Cass County ranks 193rd from fastest-rising to fastest-declining, 1 is the fastest-rising water table measured, 1449 the fastest-declining. About 200,945 people live in Cass County, North Dakota. See the fastest-moving counties guide for how Cass County stacks up against the most extreme cases nationally.
A dropping table says nothing about water quality
Whether Cass County's water table is rising or falling is independent of what's actually in the water. Depletion can concentrate naturally-occurring minerals, so it's worth checking directly with a water test rather than assuming a depth trend says anything about quality.