Saline County, MO Water Table Trend
Saline County's groundwater trend, from USGS's own readings
Saline County's representative monitoring well shows depth to water declining at a typical pace for a declining county, a fitted trend of 2.1 ft per decade over 18 years of readings.
One well stands in for Saline 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 56.4 ft below land surface. Readings span 2009-03-17 to 2026-09-30, 42 measurements from USGS well MO005-391222093185501 (Marshall Modnr Well), part of the National Water Information System. The qualifying bar and the OLS fit behind this trend are documented in the methodology guide.
Where Saline County ranks
Of the 1,449 US counties with a usable trend, Saline County ranks 1196th from fastest-rising to fastest-declining, 1 is the fastest-rising water table measured, 1449 the fastest-declining. About 23,325 people live in Saline County, Missouri. See the fastest-moving counties guide for how Saline County stacks up against the most extreme cases nationally.
What a declining table means for a well pump
Because Saline County's water table is actually declining, not just a general worry, a well owner here should consider comparing home-warranty plans that cover well-pump failure before one happens.
A dropping table says nothing about water quality
Whether Saline 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.