Mapping & Survey Data

Interactive Mapping Application

Regional mapping activities in Southeastern Wisconsin have involved planning agencies at both the regional and local level. The Commission has collected and prepared resource and planning-related mapping since 1963. Over the years, the Commission has acquired and developed a regional geographic information system of digital mapping that includes land use, environmental corridors, and other spatial data essential to the planning process.

In spring 2026, the Commission updated its Web Mapping Application. The updated version includes all map layers from the original, along with additional tools and layers, and a more modern, efficient interface. Highlights include:

• A Contour Elevation layer that allows the user to visualize terrain shape, slope, and elevation changes
• A Digital Elevation Model layer with advanced graphics techniques to provide a 3D appearance to enhance terrain features
• An Elevation Profile widget that generates and displays an elevation profile based on an input path created by drawing lines on the map
• A Swipe widget - a popular tool that lets viewers interact with map layers to see differences, or changes or to do visual analysis between layers

At the local level, every county and many city, village, and town governments in Southeastern Wisconsin have developed digital mapping capabilities as part of their planning activities. These counties and communities maintain a variety of maps, including topographic, real property boundary line (parcel), and planning-related mapping, for use in their administrative and planning functions.