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Coastal Relief Model


NCEI's U.S. Coastal Relief Model (CRM) integrates offshore bathymetry with land topography into a seamless representation of the coast. The CRM spans the U.S. East and West Coasts, the northern coast of the Gulf of Mexico, Puerto Rico, and Hawaii, reaching out to and beyond the continental slope.

Bathymetric data sources include the U.S. National Ocean Service Hydrographic Database, the U.S. Geological Survey (USGS), the Monterey Bay Aquarium Research Institute, the U.S. Army Corps of Engineers, and other academic institutions. Topographic data are from the USGS and the Shuttle Radar Topography Mission. Volumes 3-5 use bathymetric contours from the International Bathymetric Chart of the Caribbean Sea and the Gulf of Mexico project.

The CRM contains grids, or digital elevation models (DEMs), of the U.S. coastal zone. Bathymetry of the Great Lakes and more detailed DEMs of U.S. coastal areas, are also available.

How to Cite: Each volume is uniquely cited. See below (name) for details.

Coastal Relief Model map
Name & Details Year Vertical Datum Horizontal Datum Spatial Resolution Access Data
Vol. 1 - Northeast Atlantic 1998 Sea Level NAD83 3 arc-seconds THREDDS
Vol. 2 - Southeast Atlantic 1998 Sea Level NAD83 3 arc-seconds THREDDS
Vol. 3 - Florida and East Gulf of Mexico 2001 Sea Level NAD83 3 arc-seconds THREDDS
Vol. 4 - Central Gulf of Mexico 2001 Sea Level NAD83 3 arc-seconds THREDDS
Vol. 5 - Western Gulf of Mexico 2001 Sea Level NAD83 3 arc-seconds THREDDS
Vol. 6 - Southern California 2003 Sea Level NAD83 3 arc-seconds THREDDS
Vol. 7 - Central Pacific 2003 Sea Level NAD83 3 arc-seconds THREDDS
Vol. 8 - Northwest Pacific 2003 Sea Level NAD83 3 arc-seconds THREDDS
Vol. 9 - Puerto Rico 2004 Sea Level WGS84 3 arc-seconds THREDDS
Vol. 10 - Hawaii 2004 Sea Level WGS84 3 arc-seconds THREDDS
Southern California Version 2 (1 arc-sec) 2013 Mean Sea Level NAD83 1 arc-second THREDDS
Southern California Version 2 (3 arc-sec) 2013 Mean Sea Level NAD83 3 arc-seconds THREDDS
Southern Alaska 2009 Sea Level WGS84 24 arc-seconds THREDDS