Global Self-consistent Hierarchical High-resolution Shoreline.
This site presents a high-resolution shoreline data set
amalgamated from two data bases in the public domain.
The purpose of this site is to eliminate confusion about vector
shoreline data by providing information about and access to
shorelines that are generated by federal agencies.
The U.S. Geological Survey produced a comprehensive database of
digital vector shorelines for the U.S. Gulf of Mexico.
A shapefile derived from full resolution
GSHHS shoreline for the Gulf of Mexico.
A shapefile derived from
NOAA Composite shoreline for the Gulf of Mexico