This is the first statewide depth to bedrock (bedrock topography) compilation since the statewide map Depth to Bedrock in Wisconsin(link) by Trotta and Cotter in 1973. WGNHS GIS Specialist Matthew Rehwald used modern GIS tools to compile an enormous amount of data from well construction reports, maps, and rock outcrops. Then, the bedrock surface was modeled using a streamlined method that can be repeated as new data are made available; this work fills gaps in many areas of the state where no similar interpretation exists, and will be an excellent tool for educational and regional assessment purposes.
This effort was funded by the United States Geological Survey NCGMP STATEMAP program.
Questions?
Please contact WGNHS GIS Specialist Matthew Rehwald (matthew.rehwald@wisc.edu).