Montgomery County, IA Water Table Trend
Montgomery County, IA: what the water table is actually doing
Montgomery County's representative monitoring well shows depth to water rising, getting shallower over time, a fitted trend of 1 ft per decade over 81 years of readings.
This is one representative well, not a county-wide survey, the same grain limit every page here discloses.
Montgomery County's source well, in detail
Depth to water at the last reading was 19.4 ft below land surface. Readings span 1937-06-24 to 2018-03-14, 953 measurements from USGS well USGS-410057095075101 (072n37w29baba 1937iacrn-7), part of the National Water Information System. The qualifying bar and the OLS fit behind this trend are documented in the methodology guide.
How Montgomery County compares nationally
Montgomery County sits at rank 245th 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. Montgomery County, Iowa is home to about 10,063 people. See the fastest-moving counties guide for how Montgomery 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 Montgomery 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.