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A high-resolution historical shoreline dataset for the Delaware River in New Jersey and Pennsylvania, automated for use as a GIS data layer. The data were derived from shoreline maps produced by the NOAA National Ocean Service and its predecessors, based on imagery interpretation and field surveys. The attribution follows the NGS-developed C-COAST scheme, influenced by the International Hydrographic Organization's S-57 standard.
Data are in PDF and HTML formats, not a standard geospatial file format (e.g., Shapefile, GeoJSON), which may require extraction or conversion.