Long-term shoreline change rates for the Northern California coastal region using the Digital Shoreline Analysis System version 5.0

Publication Date

2024-01-12

Time Period

2024

Kratzmann, M.G., Farris, A.S., and Himmelstoss, E.A., 2024, National Shoreline Change—A GIS compilation of vector shorelines and associated shoreline change data from the 1800s to 2010s for the coast of California: U.S. Geological Survey data release, https://doi.org/10.5066/P94J0K7Z.

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Long-term (greater than 50 years, and typically greater than 100 years) shoreline change rates for the California coast are included in this dataset. Rate calculations were computed within a GIS using the Digital Shoreline Analysis System (DSAS) version 5.0, an ArcGIS extension developed by the U.S. Geological Survey. Long-term rates of shoreline change were calculated using a linear regression rate based on available shoreline data for Northern California (Oregon border to Tomales Bay), Central California (Tomales Bay to El Capitán State Beach), and Southern California (El Capitán State Beach to the border with Mexico). A reference baseline was used as the originating point for the orthogonal transects cast by the DSAS software. The transects intersect each shoreline, establishing measurement points which provide location and time information used to calculate rates of change. This dataset consists of shoreline change rates stored as a new transect layer.

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• USGS Data Release Products

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