Screen capture from the Digital Shoreline Analysis System

Digital Shoreline Analysis System

Given two or more historical positions of a shoreline or other feature on a map, this ArcGIS extension will compute rates of change.

The Digital Shoreline Analysis System (DSAS) is computer software that computes rate-of-change statistics from multiple historic shoreline positions residing in a geographic information system. It is also useful for computing rates of change for just about any other boundary change problem that incorporates a clearly-identified feature position at discrete times.


  • Guides the user through the major steps of shoreline change analysis
  • Calculates shoreline rate-of-change statistics from multiple shoreline positions to analyze historic shoreline change
  • Applies to a variety of data sets that use polylines as representations of a feature’s position at a specific point in time, such as the forward limit of a glacier, river channel boundaries, and land use and land cover maps
  • Produces metadata for DSAS-generated transects that comply with Federal Geographic Data Committee guidelines
Last modified
21 June 2021 - 3:51pm
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