DSAS v5.0 supports a baseline located anywhere-offshore, onshore, in the middle of the shoreline data (midshore), or a combination of baseline placements.ĭSAS generates transects that are cast perpendicular to the reference baseline at a user-specified spacing alongshore. For additional questions or issues, feel free to contact us at IntroductionĭSAS generates transects that are cast perpendicular to the reference baseline to intersect shorelines at a user-specified spacing alongshore. Downloading sample data in conjunction with the available guides is great way to familiarize yourself with DSAS. We recommend starting with the User Guide, and taking the time to watch the available help videos. There are many great resources to help navigate DSAS.
Summary report: a text file is generated each time rate calculations are run capturing all DSAS settings, input data used for analysis, and a detailed summary of statistics including overall averages, maximum and minimum, as well as averaged erosion and accretion. Rates returned as feature class: rate information is automatically spatially joined to DSAS transects for faster visualization.ĭata visualization: rates of change are added to the map view with pre-set color ramps for rapid display and interpretation of results.īeta shoreline forecasting: future shoreline horizons calculated with uncertainty bands for advanced interpretation of forecasted changes. For additional questions please contact What’s New in DSAS v5.0Īdvanced baseline placement options: Baselines located onshore, offshore, midshore (new!) or any combination of baseline orientations are now accepted.Īttribute Automator: a tool for easily adding required and optional attribute fields to shoreline and baseline data. The supporting DSAS version 5.0 User Guide (found here) contains Installation procedures, system requirements, and detailed instructions for use. Available help resources include an instructional video for System Requirements and Installation, as well as a tutorial detailing a Sample Data Workflow.
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Click on the file " DSASAddin_v5.0.zip"" to download the Esri add-in file.
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An in-depth user guide and video tutorials are available that provide detailed instruction on the DSAS workflow including: how to define a reference baseline for measurements, the steps needed to generate automated measurement transects and metadata based on user-specified parameters, guidelines on how to manually add or edit existing transects, and an explanation of the visualization options to display calculated rates of shoreline change and other statistical information.ĭSAS version 5.0 was released in December 2018 and is publicly available here. A user-friendly interface guides the user through the major steps of shoreline change analysis. It provides an automated method for establishing measurement locations, performs rate calculations, provides the statistical data necessary to assess the robustness of the rates, and includes a beta model of shoreline forecasting with the option to generate 10 and/or 20-year shoreline horizons and uncertainty bands.
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The Digital Shoreline Analysis System (DSAS) v5.0 software is an add-in to Esri ArcGIS desktop 10.4-10.6 that enables a user to calculate rate-of-change statistics from multiple historical shoreline positions. Computer Software for Calculating Shoreline Change (or positional change of a boundary over time)
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