Minidoka County, ID Water Table Trend
Minidoka County's groundwater trend, from USGS's own readings
Minidoka County's representative monitoring well shows depth to water declining faster than most declining counties, a fitted trend of 17.5 ft per decade over 98 years of readings.
This is one representative well, not a county-wide survey, the same grain limit every page here discloses.
Minidoka County's source well, in detail
Depth to water at the last reading was 374.3 ft below land surface. Readings span 1928-06-20 to 2026-06-22, 25 measurements from USGS well USGS-424132113533401 (08s 22e 32aaa1), part of the National Water Information System. The qualifying bar and the OLS fit behind this trend are documented in the methodology guide.
How Minidoka County compares nationally
Minidoka County sits at rank 1424th 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. Minidoka County, Idaho is home to about 22,691 people. See the fastest-moving counties guide for how Minidoka County stacks up against the most extreme cases nationally.
If you own a well in Minidoka County
A dropping water table means a residential pump has to reach deeper and work harder, which shortens its life. In Minidoka County, that trend is real, not assumed: 17.5 ft per decade over 98 years.
Depth and quality are separate questions
This page answers a depth question, not a quality one. A well in Minidoka 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.