Tooele County, UT Water Table Trend
Tooele County's groundwater trend, from USGS's own readings
Tooele County's representative monitoring well shows depth to water declining, slower than most declining counties, a fitted trend of 0.8 ft per decade over 90 years of readings.
This is one representative well, not a county-wide survey, the same grain limit every page here discloses.
Tooele County's source well, in detail
Water in this well currently sits 14.2 ft above land surface (flowing/artesian), a flowing or artesian well rather than one pumped from below. Readings span 1935-10-25 to 2026-03-03, 93 measurements from USGS well USGS-403831112185401 ((C- 2- 4)17dad- 1), part of the National Water Information System. The qualifying bar and the OLS fit behind this trend are documented in the methodology guide.
How Tooele County compares nationally
Tooele County sits at rank 1040th 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. Tooele County, Utah is home to about 84,488 people. See the fastest-moving counties guide for how Tooele County stacks up against the most extreme cases nationally.
If you own a well in Tooele County
A dropping water table means a residential pump has to reach deeper and work harder, which shortens its life. In Tooele County, that trend is real, not assumed: 0.8 ft per decade over 90 years.
Depth and quality are separate questions
This page answers a depth question, not a quality one. A well in Tooele 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.