Trempealeau County, WI Water Table Trend
Is the water table dropping in Trempealeau County, WI?
Trempealeau County's representative monitoring well shows depth to water holding roughly steady, a fitted trend of 0.3 ft per decade over 47 years of readings.
This is one representative well, not a county-wide survey, the same grain limit every page here discloses.
Trempealeau County's source well, in detail
Depth to water at the last reading was 42.6 ft below land surface. Readings span 1979-11-16 to 2026-08-26, 433 measurements from USGS well USGS-441743091153101 (Tr-21/07w/17-0071), part of the National Water Information System. The qualifying bar and the OLS fit behind this trend are documented in the methodology guide.
How Trempealeau County compares nationally
Trempealeau County sits at rank 461st 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. Trempealeau County, Wisconsin is home to about 30,801 people. See the fastest-moving counties guide for how Trempealeau 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 Trempealeau 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.