*Development* Volume Change Analysis - Application

The U.S. Army Corps of Engineers (USACE) National Coastal Mapping Program (NCMP), executed by the Joint Airborne Lidar Bathymetry Technical Center of Expertise (JALBTCX), collects and processes high resolution aerial imagery and lidar data that provide regional datasets to support assessments of coastal change. The NCMP surveying methods and data products are invaluable tools for coastal management and have the potential to produce rapid-response data following extreme storm impacts. Emergency post-storm deployment of this system was used following hurricanes Matthew and Irma, and will likely continue to be used following future hurricane impacts. This web application visualizes and provides access to multiple coastal change datasets, including both storm-response and general comparisons. The operational layers visible in this application include the individual Map Blocks, for each of which pdf files visualizing the data are available. Dune Features contains dune crest and toe data. Elevation Difference Grids includes the difference grids generated by subtracting one elevation dataset from another, allowing for easy visualization of erosion and deposition patterns. The Analysis Sections shows volume change and shoreline change data quantified in bins alongshore. For more information on these layers and their sub-layers, see their respective descriptions.