The DNR bluff mapping tool is intended to help local governments identify bluffs in the administration of shoreland and river-related ordinances that regulate placement of structures, vegetation management and land alteration activities in bluff areas. The tool is intended to show the general locations of bluffs. A field survey is necessary to specifically locate the toe and top of bluffs and bluff impact zones for building purposes. Technical Requirements The user will need the following to run this tool: System Requirements: - ArcGIS 10.x - Spatial Analyst Input Data Requirements: - LiDAR or similar data that can be used or converted into a DEM for elevation data (You can download 1-meter and 3-meter DEMs from MnTOPO: http://arcgis.dnr.state.mn.us/maps/mntopo ) For step-by-step instructions on how to use the tool, please view <a href='https://resources.gisdata.mn.gov/pub/gdrs/apps/pub/us_mn_state_dnr/bluff_mapping_tool/MN DNR Bluff Mapping Tool Guidance.pdf' target=_blank>MN DNR Bluff Mapping Tool Guidance.pdf</a>