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    • Coastal Digital Elevation Models (DEMs)

    Metadata Updated: April 7, 2023

    Digital elevation models (DEMs) of U.S. and other coasts that typically integrate ocean bathymetry and land topography. The DEMs support NOAA's mission to understand and predict changes in Earth's environment, and conserve and manage coastal and marine resources to meet our Nation's economic, social, and environmental needs. NOAA's National Centers for Environmental Information (NCEI) has built many of these models, and also distributes DEMs on behalf of other NOAA offices, as well national and international partners. Bathymetric, topographic, and shoreline data used in DEM development come from a variety of sources, including NOAA's National Ocean Service (NOS) and NCEI, the U.S. Geological Survey (USGS), the U.S. Army Corps of Engineers (USACE), and the Federal Emergency Management Agency (FEMA), as well as other federal, state, and local government agencies, academic institutions, and private companies. The DEMs are referenced to a variety of vertical tidal datums, typically mean high water (MHW) or North American Vertical Datum of 1988 (NAVD 88), and usually a horizontal datum of North American Datum of 1983 (NAD 83) or World Geodetic System 1984 (WGS84). DEM cell sizes range from high-resolution models (1/9 to 1/3 arc-second; ~3 to 10 meters) that support coastal inundation studies, to regional models (roughly 3 to 24 arc-seconds) that extend farther offshore, to global models (1 arc-minute; ~2 km).

    Access & Use Information

    License: No license information was provided. If this work was prepared by an officer or employee of the United States government as part of that person's official duties it is considered a U.S. Government Work.

    Downloads & Resources

    Dates

    Metadata Date March 31, 2023
    Metadata Created Date November 12, 2020
    Metadata Updated Date April 7, 2023
    Reference Date(s) January 1, 2006 (publication)
    Frequency Of Update asNeeded

    Metadata Source

    Harvested from NGDC Collection

    Other Data Resources

    Graphic Preview

    thumbnail of coastal dem

    Additional Metadata

    Resource Type Series
    Metadata Date March 31, 2023
    Metadata Created Date November 12, 2020
    Metadata Updated Date April 7, 2023
    Reference Date(s) January 1, 2006 (publication)
    Responsible Party NOAA National Centers for Environmental Information (Point of Contact)
    Contact Email
    Guid gov.noaa.ngdc:ngdc_dems
    Category Tag 16E15F51 D96E 4051 9124 75665Abdc6Ff ["Hawaii","Natural Disasters","Environment","Pacific Islands","Oceans","Biodiversity","Coastal Flooding"]
    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., Use liability: NOAA and NCEI cannot provide any warranty as to the accuracy, reliability, or completeness of furnished data. Users assume responsibility to determine the usability of these data. The user is responsible for the results of any application of this data for other than its intended purpose., Cite as: NOAA National Geophysical Data Center. 2006: Coastal Digital Elevation Models (DEMs). NOAA National Centers for Environmental Information. Accessed [date].
    Bbox East Long 180.0
    Bbox North Lat 90.0
    Bbox South Lat -90.0
    Bbox West Long -180.0
    Coupled Resource
    Frequency Of Update asNeeded
    Graphic Preview Description thumbnail of coastal dem
    Graphic Preview File https://www.ngdc.noaa.gov/mgg/image/integrated_coastal_left.jpg
    Graphic Preview Type jpg
    Harvest Object Id 61ae6421-59c6-4498-8ab8-52ddb4374d74
    Harvest Source Id 5088829e-ee94-4daf-8d22-e38f5358f506
    Harvest Source Title NGDC Collection
    Licence 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.
    Lineage
    Metadata Language
    Metadata Type geospatial
    Old Spatial {"type": "Polygon", "coordinates": [[[-180.0, -90.0], [180.0, -90.0], [180.0, 90.0], [-180.0, 90.0], [-180.0, -90.0]]]}
    Progress onGoing
    Spatial Data Service Type ArcGIS Feature Service
    Spatial Reference System
    Spatial Harvester True
    Temporal Extent Begin 2006-01-01

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