Shorelines of the Central California coastal region (1852-2016) used in shoreline change analysis

Publication Date

2024-01-12

Start Date

1852

End Date

2016

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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Northern California: This dataset includes shorelines from 162 years ranging from 1854 to 2016 in Northern California's coastal region from the Oregon border to Tomales Bay. Shorelines were compiled from topographic survey sheets (T-sheets; National Oceanic and Atmospheric Administration (NOAA)), digital raster graphics (DRG) (U.S. Geological Survey (USGS)), and lidar (USGS, USGS/National Aeronautics and Space Administration (NASA), USGS/NOAA/U.S. Army Corps of Engineers (USACE) and NOAA/USACE/Joint Airborne Lidar Bathymetry Technical Center of eXpertise (JALBTCX)). Central California: This dataset includes shorelines from 164 years ranging from 1852 to 2016 in Central California's coastal region from Tomales Bay to El Capitán State Beach. Shorelines were compiled from T-sheets (NOAA), DRGs (USGS), and lidar (USGS, USGS/NASA, USGS/NOAA/USACE and NOAA/USACE/JALBTCX). Southern California: This dataset includes shorelines from 164 years ranging from 1852 to 2016 in Southern California's coastal region from El Capitán State Beach to the border with Mexico. Shorelines were compiled from T-sheets (NOAA), and lidar (USGS, USGS/NASA, USGS/NOAA/USACE and NOAA/USACE/JALBTCX). Historical shoreline positions serve as easily understood features that can be used to describe the movement of beaches through time. These data are used to calculate rates of shoreline change in support of the U.S. Geological Survey's Coastal Change Hazards programmatic focus to maintain a national scale database of shoreline positions and rates. Long-term shoreline change rates were generated in a GIS using the Digital Shoreline Analysis System (DSAS) version 5.0. DSAS uses a measurement baseline method to calculate rate-of-change statistics. Transects are cast from the reference baseline to intersect each shoreline, establishing measurement points used to calculate shoreline change rates.

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