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U.S. Coastal Relief Model - Southern California Version 2

browse graphicThumbnail of DEM
NGDC's U.S. Coastal Relief Model (CRM) provides a comprehensive view of the U.S. coastal zone integrating 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 in places even beyond, the continental slope. Bathymetric and topographic data sources include: NGDC's NOS hydrographic surveys and multibeam bathymetry; the U.S. Geological Survey (USGS); and other federal government agencies and academic institutions. Bathymetric contours from the International Bathymetric Chart of the Caribbean Sea and the Gulf of Mexico project were also used. Digital elevation models (DEMs) of the Great Lakes, Southern Alaska, and high-resolution DEMs of U.S. coastal communities and territories are also available.
  • Cite as: National Geophysical Data Center, 2012. U.S. Coastal Relief Model - Southern California vers. 2. National Geophysical Data Center, NOAA. doi:10.7289/V5V985ZM [access date].
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Search Data
  • DEM text search (search)
    Text search for locating completed and planned DEMs.
  • Bathymetric Data Viewer (search)
    The Bathymetric Data Viewer is an interactive map providing discovery, descriptions, and download capability for bathymetric survey data and digital elevation models archived at NOAA's National Centers for Environmental Information (NCEI).
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Distribution Formats
  • netCDF(Version:4 Classic)
Distributor DEM Information
NOAA National Centers for Environmental Information
dem.info@noaa.gov
Dataset Point of Contact DEM Information
NOAA National Centers for Environmental Information
dem.info@noaa.gov
Time Period 1999-01-01 to Present
Spatial Reference System urn:ogc:def:crs:EPSG::4269urn:ogc:def:crs:EPSG::5715
Spatial Bounding Box Coordinates
West:-128.00
East:-116.00
South:30.00
North:37.00
Spatial Coverage Map
General Documentation
Associated Resources
Publication Dates
  • publication: 2013-07-08
Edition Second
Dataset Progress Status Complete - production of the data has been completed
Data Update Frequency As needed
Supplemental Information
The vertical datum for the source bathymetric data was generally mean sea level (MSL), but NGDC Tsunami Inundation DEMs were referenced to North American Vertical Datum of 1988 (NAVD 88). Source topographic data were also in either MSL or NAVD 88. The differences between these datums have been corrected to MSL, however the elevation values may not be as accurate as you might like or need. Assume a vertical accuracy no better than 1 meter for any elevation values in the CRM.
Purpose To provide long-term scientific data stewardship for the Nation's geophysical data, ensuring quality, integrity, and accessibility.
Use Limitations
  • Not to be used for navigation. Although these data are of high quality and useful for planning and modeling purposes, they are not suitable for navigation. For navigation, please refer to the NOS nautical chart series.
  • Produced by the NOAA National Centers for Environmental Information. Not subject to copyright protection within the United States.
Dataset Citation
  • Cite as: National Geophysical Data Center, 2012. U.S. Coastal Relief Model - Southern California vers. 2. National Geophysical Data Center, NOAA. doi:10.7289/V5V985ZM [access date].
Custodians
  • NOAA National Centers for Environmental Information
Publishers
  • NOAA National Centers for Environmental Information
Theme keywords Global Change Master Directory (GCMD) Science and Services Keywords
  • Earth Science > Oceans > Bathymetry/Seafloor Topography > Bathymetry
  • Earth Science > Oceans > Bathymetry/Seafloor Topography > Continental Margins
  • Earth Science > Oceans > Bathymetry/Seafloor Topography > Water Depth
  • EARTH SCIENCE > OCEANS > Coastal Processes > Coastal Elevation
INFOTERRA Keyword Thesaurus
  • INFOTERRA > Marine environments > Coastal Ecosystems > Coastal Areas
  • INFOTERRA > Subject disciplines > Geophysics > Geophysics
  • INFOTERRA > Subject disciplines > Geomorphology > Geomorphology
Uncontrolled Keywords
  • Coastal Bathymetry
  • Outer Continental Shelf
  • Coastal Topography
Global Change Master Directory (GCMD) Service Keywords
  • DATA ANALYSIS AND VISUALIZATION > GEOGRAPHIC INFORMATION SYSTEMS > WEB-BASED GEOGRAPHIC INFORMATION SYSTEMS
  • DATA MANAGEMENT/DATA HANDLING > DATA SEARCH AND RETRIEVAL
  • DATA ANALYSIS AND VISUALIZATION > VISUALIZATION/IMAGE PROCESSING
Global Change Master Directory (GCMD) Service Keywords
  • DATA ANALYSIS AND VISUALIZATION > GEOGRAPHIC INFORMATION SYSTEMS > WEB-BASED GEOGRAPHIC INFORMATION SYSTEMS
  • DATA MANAGEMENT/DATA HANDLING > DATA SEARCH AND RETRIEVAL
  • DATA ANALYSIS AND VISUALIZATION > VISUALIZATION/IMAGE PROCESSING
Data Center keywords Global Change Master Directory (GCMD) Data Center Keywords
  • DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce
  • DOC/NOAA/NESDIS/NGDC > National Geophysical Data Center, NESDIS, NOAA, U.S. Department of Commerce
Place keywords Global Change Master Directory (GCMD) Location Keywords
  • Ocean > Pacific Ocean
  • Continent > North America
Project keywords Global Change Master Directory (GCMD) Project Keywords
  • ICSU-WDS > International Council for Science - World Data System
Use Constraints No constraint information available
Access Constraints
  • Distribution liability: NOAA and NCEI make no warranty, expressed or implied, regarding these data, nor does the fact of distribution constitute such a warranty. NOAA and NCEI cannot assume liability for any damages caused by any errors or omissions in these data. If appropriate, NCEI can only certify that the data it distributes are an authentic copy of the records that were accepted for inclusion in the NCEI archives.
Other Constraints Cite as: National Geophysical Data Center, 2012. U.S. Coastal Relief Model - Southern California vers. 2. National Geophysical Data Center, NOAA. doi:10.7289/V5V985ZM [access date].
Fees Fee information not available.
Lineage information for:dataset
Processor
  • DOC/NOAA/NESDIS/NGDC > National Geophysical Data Center, NESDIS, NOAA, U.S. Department of Commerce
Processing Steps
  • 2013-05-30T00:00:00 -All datasets obtained by NGDC were converted to common horizontal and vertical datums of NAD 83 geographic and MSL, respectively, using FME or ArcGIS. They were also converted to common file format, ESRI point shapefiles or digital rasters, for visualization and inspection.
  • 2013-06-03T00:00:00 -Datasets were visually inspected with ArcGIS and QT Modeler for identification and editing of data anomalies. Datasets were then compared with overlapping datasets to ensure data consistency.
  • 2013-06-25T00:00:00 -xyz files of the bathymetric data were surfaced using GMT's 'surface' tool onto a 3 arc-second grid that interpolated to fill empty cells. Values over 0 meters in elevation were not used. The resulting Arc ASCII grid was imported into ArcGIS and clipped to the coastline to remove values over land.
  • 2013-07-05T00:00:00 -xyz files for each input dataset were gridded using MB-System's 'mbgrid' tool, which utilizes a high-tension spline interpolation method to fill grid cells with no input elevation values. Preferential weighting was given to more recent, higher-accuracy datasets. Gridding was performed in individual 1 degree by 1 degree tiles, each with a 5% data buffer. The grids were imported in ArcGIS and seamlessly merged to create the final DEM.
Source Datasets
  • NOS Hydrographic Surveys
    • NOS Hydrographic Survey Database (download)
      Digital database of NOS hydrographic surveys that date back to the late 19th century.
    • Description of Source: Source Contribution: hydrographic surveys ; Source Type: online
    • Temporal extent used: 1933-01-01 to 2008-01-01
  • NGDC Multibeam Bathymetry Database
    • NGDC Multibeam Bathymetry Database (download)
      Multibeam swath sonar survey data
    • Description of Source: Source Contribution: Multibeam bathymetry data ; Source Type: online
    • Temporal extent used: 1982-01-01 to 2012-01-01
  • Shuttle Radar Topography Mission (SRTM) processed by CGIAR
  • GEBCO 08
    • GEBCO 08 (download)
      Integrated bathymetric-topographic global DEM
    • Description of Source: Source Contribution: bathymetry and topography ; Source Type: online
    • Temporal extent used: 2008-01-01 to 2010-01-01
  • USGS NED topography
    • USGS National Elevation Dataset (download)
      Digital database of U.S. topography, in raster form (DEM)
    • Description of Source: Source Contribution: Topographic DEM ; Source Type: online
    • Temporal extent used: 1999-01-01 to 2013-01-01
  • NGDC Bathymetric-topographic DEMs
    • NGDC Bathymetric-topographic DEMs (download)
      Integrated bathymetric-topographic DEMs
    • Description of Source: Source Contribution: NGDC Bathymetric-topographic DEMs ; Source Type: online
    • Temporal extent used: 2006-01-01 to 2012-01-01
Lineage information for:repository
Processing Steps
  • 2015-04-22T00:00:00 -NOAA created the National Centers for Environmental Information (NCEI) by merging NOAA's National Climatic Data Center (NCDC), National Geophysical Data Center (NGDC), and National Oceanographic Data Center (NODC), including the National Coastal Data Development Center (NCDDC), per the Consolidated and Further Continuing Appropriations Act, 2015, Public Law 113-235. NCEI launched publicly on April 22, 2015.
Last Modified: 2019-06-06
For questions about the information on this page, please email:dem.info@noaa.gov