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Historical Shorelines for Puerto Rico from 1901 to 1987

Dates

Publication Date

Citation

Heslin, J.L., Henderson, R.E., and Himmelstoss, E.A., 2021, Historical shorelines for Puerto Rico from 1901 to 1987: U.S. Geological Survey data release, https://doi.org/10.5066/P9CLXCEG.

Summary

The U.S. Geological Survey (USGS) maintains shoreline positions for the United States coasts from both older sources, such as aerial photograph or topographic surveys, and contemporary sources, such as lidar-point clouds and digital elevation models. These shorelines are compiled and analyzed in the Digital Shoreline Analysis System software (v5.1) to compute their 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 an expansion of [...]

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PR_1901-1987_Shorelines.jpg
“Coverage of shorelines from T-sheets and aerial photos from 1901 to 1987.”
thumbnail 3.34 MB image/jpeg
Shapefile: PR_Historical_Shorelines.zip
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PR_Historical_Shorelines.sbx 508 Bytes
PR_Historical_Shorelines.shp 3.3 MB
PR_Historical_Shorelines.shx 4.97 KB
PR_Historical_Shorelines_metadata.html
“html metadata”
122.83 KB

Purpose

A previously published USGS open file report used these shorelines to calculate rates of shoreline change, but the shoreline data themselves were not published. This data release is the result of an effort to recover, edit, and add to the existing shoreline data by using a thorough quality assurance/quality control workflow. Shorelines were digitized from georeferenced NOAA historical survey sheets (T-sheets) and aerial photographs, using the high water line and wet-dry line, respectively, as a shoreline reference. These shoreline data are used in conjunction with other compiled shorelines, provided in complementary USGS data releases, to calculate rates of shoreline change.

Additional Information

Identifiers

Type Scheme Key
DOI https://www.sciencebase.gov/vocab/category/item/identifier doi:10.5066/P9CLXCEG

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