San Juan County, UT Water Table Trend
San Juan County's groundwater trend, from USGS's own readings
Over 86 years of USGS readings, the well tracking San Juan County's aquifer is holding roughly steady: 0.4 ft per decade.
One well stands in for San Juan 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 72.9 ft below land surface. Readings span 1940-03-01 to 2026-03-26, 54 measurements from USGS well USGS-381329109240001 (T(D-29-23)33aca- 1), part of the National Water Information System. The qualifying bar and the OLS fit behind this trend are documented in the methodology guide.
Where San Juan County ranks
Of the 1,449 US counties with a usable trend, San Juan County ranks 901st from fastest-rising to fastest-declining, 1 is the fastest-rising water table measured, 1449 the fastest-declining. About 14,601 people live in San Juan County, Utah. See the fastest-moving counties guide for how San Juan County stacks up against the most extreme cases nationally.
A dropping table says nothing about water quality
Whether San Juan 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.