Carroll County, IL Water Table Trend
Is the water table dropping in Carroll County, IL?
Over 62 years of USGS readings, the well tracking Carroll County's aquifer is declining faster than most declining counties: 4.1 ft per decade.
One well stands in for Carroll 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 255 ft below land surface. Readings span 1957-02-20 to 2019-06-26, 7 measurements from USGS well USGS-420614089500101 (24n 6e- 5.5e1), part of the National Water Information System. The qualifying bar and the OLS fit behind this trend are documented in the methodology guide.
Where Carroll County ranks
Of the 1,449 US counties with a usable trend, Carroll County ranks 1281st from fastest-rising to fastest-declining, 1 is the fastest-rising water table measured, 1449 the fastest-declining. About 15,444 people live in Carroll County, Illinois. See the fastest-moving counties guide for how Carroll County stacks up against the most extreme cases nationally.
What a declining table means for a well pump
Because Carroll 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 Carroll 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.