Calumet MapsThis data layer consists of a polygon coverage (BRDPxx2D) derived from 1:250,000-scale source materials, containing depth-to-bedrock estimates and related information used in preparing the Groundwater Contamination Susceptibility Model (GCSM) for Wisconsin. The primary source for the Bedrock Depth data layer is a 1973 map at 1:1,000,000 scale published by the Wisconsin Geological & Natural History Survey (WGNHS) and USGS. Where more recent information was available, the USGS updated the 50-foot and 100-foot contours of the depth-to-bedrock map at a scale of 1:250,000. Soil associations data, and other information, were used to add a 5-foot contour to the data layer.ArcGIS FeatureLayerhttps://hub.arcgis.com/datasets/40bda656a9c24f22a17a22df173ab1e0_0engCalumet County GIS DownloadPublicBedrockDepthOD [Wisconsin--Calumet County]Web servicesWisconsin--Calumet CountyWisconsinLast Modified: 2026-01-07