Navajo County, AZ Water Table Trend
Navajo County, AZ: what the water table is actually doing
Over 73 years of USGS readings, the well tracking Navajo County's aquifer is rising, getting shallower over time: 0.5 ft per decade.
One well stands in for Navajo 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 171.7 ft below land surface. Readings span 1950-06-13 to 2023-02-08, 43 measurements from USGS well USGS-363309110420501 (02 040-11.20x13.60 [2k-300 Shonto]), part of the National Water Information System. The qualifying bar and the OLS fit behind this trend are documented in the methodology guide.
Where Navajo County ranks
Of the 1,449 US counties with a usable trend, Navajo County ranks 353rd from fastest-rising to fastest-declining, 1 is the fastest-rising water table measured, 1449 the fastest-declining. About 109,516 people live in Navajo County, Arizona. See the fastest-moving counties guide for how Navajo County stacks up against the most extreme cases nationally.
A dropping table says nothing about water quality
Whether Navajo 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.