Lewis County, MO Water Table Trend
Is the water table dropping in Lewis County, MO?
Lewis County's representative monitoring well shows depth to water rising, getting shallower over time, a fitted trend of 0.7 ft per decade over 17 years of readings.
One well stands in for Lewis 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 62.7 ft below land surface. Readings span 2009-04-01 to 2026-05-27, 43 measurements from USGS well MO005-401057091494501 (Deer Ridge Wildlife Area), part of the National Water Information System. The qualifying bar and the OLS fit behind this trend are documented in the methodology guide.
Where Lewis County ranks
Of the 1,449 US counties with a usable trend, Lewis County ranks 316th from fastest-rising to fastest-declining, 1 is the fastest-rising water table measured, 1449 the fastest-declining. About 9,852 people live in Lewis County, Missouri. See the fastest-moving counties guide for how Lewis County stacks up against the most extreme cases nationally.
A dropping table says nothing about water quality
Whether Lewis 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.