Depth-to-Bedrock Mapping in Wisconsin

Depth-to-bedrock maps show the thickness of unconsolidated materials overlying bedrock. These maps provide a key link between the underlying geology, groundwater flow, and land use and are important in guiding activities such as permitting, bridge construction, and the land application of waste products in sensitive areas. Given their role in guiding decision making, the production of accurate depth-to-bedrock maps is critical. This report describes techniques for making the maps, identifies sources of data and evaluates their strengths and weaknesses, describes available tools and best practices for using them, and explains the concept of uncertainty—how it’s measured, its importance in decision making, and ways of displaying it.

Data and Resources

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