Salt Lake County, UT Water Table Trend
Salt Lake County, UT: what the water table is actually doing
Salt Lake County's long-term well puts the trend at 0.7 ft per decade, rising, getting shallower over time, based on 403 measurements since 1931.
This is one representative well, not a county-wide survey, the same grain limit every page here discloses.
Salt Lake County's source well, in detail
Water in this well currently sits 8.2 ft above land surface (flowing/artesian), a flowing or artesian well rather than one pumped from below. Readings span 1931-10-02 to 2026-02-03, 403 measurements from USGS well USGS-404506111523301 ((D- 1- 1) 7abd- 6), part of the National Water Information System. The qualifying bar and the OLS fit behind this trend are documented in the methodology guide.
How Salt Lake County compares nationally
Salt Lake County sits at rank 305th of 1,449 ranked counties, ordered rising-to-declining, so a low number means a rising water table and a high one means fast decline. Salt Lake County, Utah is home to about 1,216,274 people. See the fastest-moving counties guide for how Salt Lake County stacks up against the most extreme cases nationally.
Depth and quality are separate questions
This page answers a depth question, not a quality one. A well in Salt Lake County can be stable in depth and still worth testing for quality, or declining and still test clean, the two are measured separately, and only a direct test settles the second one.