Madison County, IN Water Table Trend
Madison County's groundwater trend, from USGS's own readings
Over 32 years of USGS readings, the well tracking Madison County's aquifer is declining, slower than most declining counties: 0.6 ft per decade.
One well stands in for Madison 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 4.9 ft below land surface. Readings span 1994-08-02 to 2026-07-22, 18 measurements from USGS well USGS-401952085460101 (Nawqa Ag Well Tp13 Near Rigdon, In), part of the National Water Information System. The qualifying bar and the OLS fit behind this trend are documented in the methodology guide.
Where Madison County ranks
Of the 1,449 US counties with a usable trend, Madison County ranks 985th from fastest-rising to fastest-declining, 1 is the fastest-rising water table measured, 1449 the fastest-declining. About 134,222 people live in Madison County, Indiana. See the fastest-moving counties guide for how Madison County stacks up against the most extreme cases nationally.
What a declining table means for a well pump
Because Madison 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 Madison 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.