St. Croix County, WI Water Table Trend
Is the water table dropping in St. Croix County, WI?
St. Croix County's representative monitoring well shows depth to water rising, getting shallower over time, a fitted trend of 2.7 ft per decade over 38 years of readings.
This is one representative well, not a county-wide survey, the same grain limit every page here discloses.
St. Croix County's source well, in detail
Depth to water at the last reading was 62.9 ft below land surface. Readings span 1988-09-26 to 2026-08-10, 7 measurements from USGS well USGS-451027092142901 (Pdct-U8 031n15w17da 01), part of the National Water Information System. The qualifying bar and the OLS fit behind this trend are documented in the methodology guide.
How St. Croix County compares nationally
St. Croix County sits at rank 104th 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. St. Croix County, Wisconsin is home to about 97,954 people. See the fastest-moving counties guide for how St. Croix 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 St. Croix 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.