Jo Daviess County, IL Water Table Trend
Is the water table dropping in Jo Daviess County, IL?
Jo Daviess County's representative monitoring well shows depth to water declining faster than most declining counties, a fitted trend of 22.6 ft per decade over 34 years of readings.
One well stands in for Jo Daviess 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 153 ft below land surface. Readings span 1986-11-14 to 2020-06-24, 7 measurements from USGS well USGS-422443090262201 (28n 1w-24.6f1), part of the National Water Information System. The qualifying bar and the OLS fit behind this trend are documented in the methodology guide.
Where Jo Daviess County ranks
Of the 1,449 US counties with a usable trend, Jo Daviess County ranks 1438th from fastest-rising to fastest-declining, 1 is the fastest-rising water table measured, 1449 the fastest-declining. About 21,528 people live in Jo Daviess County, Illinois. See the fastest-moving counties guide for how Jo Daviess County stacks up against the most extreme cases nationally.
What a declining table means for a well pump
Because Jo Daviess 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 Jo Daviess 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.