Bannock County, ID Water Table Trend
Bannock County, ID: what the water table is actually doing
Over 95 years of USGS readings, the well tracking Bannock County's aquifer is holding roughly steady: 0.4 ft per decade.
This is one representative well, not a county-wide survey, the same grain limit every page here discloses.
Bannock County's source well, in detail
Depth to water at the last reading was 68.9 ft below land surface. Readings span 1928-06-13 to 2023-04-03, 19 measurements from USGS well USGS-425702112305001 (05s 34e 29ccc1), part of the National Water Information System. The qualifying bar and the OLS fit behind this trend are documented in the methodology guide.
How Bannock County compares nationally
Bannock County sits at rank 929th 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. Bannock County, Idaho is home to about 91,010 people. See the fastest-moving counties guide for how Bannock 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 Bannock 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.