Brazoria County, TX Water Table Trend
Brazoria County, TX: what the water table is actually doing
Brazoria County's representative monitoring well shows depth to water rising, getting shallower over time, a fitted trend of 1.2 ft per decade over 80 years of readings.
One well stands in for Brazoria 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 105.5 ft below land surface. Readings span 1946-06-21 to 2026-01-28, 87 measurements from USGS well USGS-293005095151801 (Bh-65-30-902), part of the National Water Information System. The qualifying bar and the OLS fit behind this trend are documented in the methodology guide.
Where Brazoria County ranks
Of the 1,449 US counties with a usable trend, Brazoria County ranks 213th from fastest-rising to fastest-declining, 1 is the fastest-rising water table measured, 1449 the fastest-declining. About 413,224 people live in Brazoria County, Texas. See the fastest-moving counties guide for how Brazoria County stacks up against the most extreme cases nationally.
A dropping table says nothing about water quality
Whether Brazoria 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.