Well Viewer
Find a locality using:


*To search for an entire township, select the "0" section
Search for reports based on:

This interactive web map accesses historic (1936 - 1989) well construction reports (WCRs) maintained by the Wisconsin Geological and Natural History Survey (WGNHS). Wells were mapped to the centroid of either a section, quarter section, or quarter-quarter section as recorded on the original WCR. These locations have not been field verified, and errors are very common. The average success rate for finding the WCR for a specific well is only about 50%. Our website has more information about well records.

Please contact us at geodata@wgnhs.uwex.edu if you would like to report an error on this site or have questions about the data.

General Steps

1. Enter Location

Search for your area-of-interest using one of the “Find a locality” functions or by panning and zooming the map.

2. Search for Reports

Perform a search to return a list of all the well construction reports in the current map area. Only the first 1000 results are shown on the map and in table. Searches of a large map area will return an incomplete set of records.

3. Results

After performing a search, review the list of reports in the results table. The results are also highlighted on the map. Selecting a table row will show the location of the report on the map.


  • Well records are available in PDF format using links in map popups and the results table.
  • Most well record locations are generalized to the center of sections or quarter-quarter section, so several records may coincide at the same point. In this case a single well symbol will be displayed, but the points are essentially stacked on each other.
  • Because of the density of the point locations, they are displayed on the map only when zoomed to the township level.
  • For more information about townships, ranges, and sections, please see our publication on the public land survey system in Wisconsin.