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Baseline for the islands of of Vieques and Culebra, Puerto Rico, generated to calculate shoreline change rates using the Digital Shoreline Analysis System version 5.1

Dates

Publication Date

Citation

Henderson, R.E., Heslin, J.L., and Himmelstoss, E.A., 2021, Puerto Rico shoreline change — A GIS compilation of shorelines, baselines, intersects, and change rates calculated using the Digital Shoreline Analysis system version 5.1 (ver. 2.0, March 2023): U.S. Geological Survey data release, https://doi.org/10.5066/P9FNRRN0.

Summary

The U.S. Geological Survey (USGS) maintains shoreline positions for the United States coasts from both older sources, such as aerial photographs or topographic surveys, and contemporary sources, such as lidar-point clouds and digital elevation models. These shorelines are compiled and analyzed in the USGS Digital Shoreline Analysis System (DSAS), version 5.1 software to calculate rates of change. Keeping a record of historical shoreline positions is an effective method to monitor change over time, enabling scientists to identify areas most susceptible to erosion or accretion. These data can help coastal managers understand which areas of the coast are vulnerable to change. This data release, and other associated products, represent [...]

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Attached Files

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VC_Baselines.jpg
“Map with the extent of baselines used for shoreline change analysis.”
thumbnail 2.66 MB image/jpeg
Shapefile: VC_Baselines.zip
VC_Baselines.CPG 5 Bytes
VC_Baselines.dbf 450 Bytes
VC_Baselines.prj 145 Bytes
VC_Baselines.sbn 220 Bytes
VC_Baselines.sbx 132 Bytes
VC_Baselines.shp 125.16 KB
VC_Baselines.shx 164 Bytes
VC_Baselines_metadata.html
“html metadata”
51.05 KB

Purpose

This dataset includes a reference baseline used by the Digital Shoreline Analysis System (DSAS) to calculate rate-of-change statistics for the islands Vieques and Culebra of Puerto Rico. The baseline layer serves as the starting point for orthogonally-oriented transects generated by the DSAS application. The transects intersect each shoreline and establish measurement points used to calculate shoreline change rates.

Additional Information

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