Darke County, OH Water Table Trend
Darke County's groundwater trend, from USGS's own readings
Darke County's long-term well puts the trend at 0.5 ft per decade, holding roughly steady, based on 15 measurements since 2000.
One well stands in for Darke 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 15.9 ft below land surface. Readings span 2000-07-24 to 2024-09-26, 15 measurements from USGS well USGS-395911084422700 (D-175 Miam Nawqa Lus Well Bvas Ag-10), part of the National Water Information System. The qualifying bar and the OLS fit behind this trend are documented in the methodology guide.
Where Darke County ranks
Of the 1,449 US counties with a usable trend, Darke County ranks 940th from fastest-rising to fastest-declining, 1 is the fastest-rising water table measured, 1449 the fastest-declining. About 51,462 people live in Darke County, Ohio. See the fastest-moving counties guide for how Darke County stacks up against the most extreme cases nationally.
A dropping table says nothing about water quality
Whether Darke 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.