The "Digital Elevation Model" is created based on sample elevations across the county. The Digital Elevation Model is used in the creation of floodplain designations and other types of analyses. The current digital elevation model is generally approximate and can be used by multiple agencies when elevation is of need of general terrain data. One example is municipalities may refer to the DEM when calculating rainfall runoff into storm sewer lines. This assists in determining the sizing of pipe needed. Another example is the DNR's usage in predicting flood staging. The DNR has been pursuing a more accurate DEM through the technology of LIDAR. LIDAR would eliminate the general nature of the current DEM and would create accurate floodplain areas, as well as many other useful flood related references for the public.
The map is available for download in detail below.