Miami-Dade County, FL Water Table Trend
Is the water table dropping in Miami-Dade County, FL?
Miami-Dade County's long-term well puts the trend at 0 ft per decade, holding roughly steady, based on 323 measurements since 1940.
One well stands in for Miami-Dade 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 10.3 ft below land surface. Readings span 1940-01-11 to 2026-06-30, 323 measurements from USGS well USGS-254217080171801 (F - 319), part of the National Water Information System. The qualifying bar and the OLS fit behind this trend are documented in the methodology guide.
Where Miami-Dade County ranks
Of the 1,449 US counties with a usable trend, Miami-Dade County ranks 621st from fastest-rising to fastest-declining, 1 is the fastest-rising water table measured, 1449 the fastest-declining. About 2,838,461 people live in Miami-Dade County, Florida. See the fastest-moving counties guide for how Miami-Dade County stacks up against the most extreme cases nationally.
A dropping table says nothing about water quality
Whether Miami-Dade 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.