Grand County, CO Water Table Trend
Grand County's groundwater trend, from USGS's own readings
Grand County's long-term well puts the trend at 1.1 ft per decade, rising, getting shallower over time, based on 13 measurements since 1996.
One well stands in for Grand 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 1.8 ft below land surface. Readings span 1996-08-19 to 2025-05-15, 13 measurements from USGS well USGS-395648105485300 (Sc00107519dbd-Fraser Visitor Center), part of the National Water Information System. The qualifying bar and the OLS fit behind this trend are documented in the methodology guide.
Where Grand County ranks
Of the 1,449 US counties with a usable trend, Grand County ranks 238th from fastest-rising to fastest-declining, 1 is the fastest-rising water table measured, 1449 the fastest-declining. About 16,154 people live in Grand County, Colorado. See the fastest-moving counties guide for how Grand County stacks up against the most extreme cases nationally.
A dropping table says nothing about water quality
Whether Grand 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.