Montgomery County, MO Water Table Trend
Montgomery County, MO: what the water table is actually doing
Montgomery County's long-term well puts the trend at 10.3 ft per decade, declining faster than most declining counties, based on 82 measurements since 1956.
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 361.4 ft below land surface. Readings span 1956-04-01 to 2026-06-04, 82 measurements from USGS well MO005-385428091265001 (New Florence), 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 1395th 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, Missouri is home to about 11,511 people. See the fastest-moving counties guide for how Montgomery County stacks up against the most extreme cases nationally.
If you own a well in Montgomery County
A dropping water table means a residential pump has to reach deeper and work harder, which shortens its life. In Montgomery County, that trend is real, not assumed: 10.3 ft per decade over 70 years.
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.