Astoria, Oregon 1/3 arc-second MHW Coastal Digital Elevation Model

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NOAA's National Centers for Environmental Information (NCEI) is building high-resolution digital elevation models (DEMs) for select U.S. coastal regions. These integrated bathymetric-topographic DEMs are used to support individual coastal States as part of the Pacific Marine Environmental Laboratory's (PMEL) efforts to support NOAA's tsunami forecast system and for tsunami inundation modeling, improve community preparedness and hazard mitigation. Bathymetric,
topographic, and shoreline data used in DEM compilation are obtained from various sources including: NOAA; the U.S. Geological Survey (USGS); and other federal, state, and local government agencies, academic institutions, and private companies. DEMs are referenced to the vertical datum of MHW and horizontal datum of World Geodetic System 1984 geographic (WGS 84). Grid spacing for the DEM is 1/3 arc-second (~10 meters).
Cite this dataset when used as a source.
  • ID not available.
gov.noaa.ngdc.mgg.dem:5490
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Distribution Formats Format not available
    Distributor DEM Information
    DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce
    dem.info@noaa.gov
    Dataset Point of Contact DEM Information
    DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce
    dem.info@noaa.gov
    Time Period 1933-01-01 to 2014-04-23
    Spatial Bounding Box Coordinates
    N: 47.16
    S: 45.90
    E: -123.60
    W: -124.59
    Spatial Coverage Map
    General Documentation
    Associated Resources
    Publication Dates
    • publication: 2016-06-18
    Edition Third
    Data Presentation Form mapDigital
    Dataset Progress Status Complete - production of the data has been completed
    Data Update Frequency As needed
    Purpose Developed for the Pacific Marine Environmetal Laboratory (PMEL) in support of NOAA's tsunami forecasting and warning efforts.
    Use Limitations
    • Produced by the NOAA National Geophysical Data Center. Not subject to copyright protection within the United States.
    Collaborators
    • Pacific Marine Environmental Laboratory (PMEL)
    Publishers
    • DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce
    Theme keywords Global Change Master Directory (GCMD) Science and Services Keywords
    • Earth Science > Oceans > Bathymetry/Seafloor Topography > Seafloor Topography
    • Earth Science > Oceans > Bathymetry/Seafloor Topography > Bathymetry
    • Earth Science > Oceans > Bathymetry/Seafloor Topography > Water Depth
    • Earth Science > Land Surface > Topography > Terrain Elevation > Topographical Relief Maps
    • Earth Science > Oceans > Coastal Processes > Coastal Elevation
    NASA/GCMD Platform Keywords
    • Models/Analyses > DEM > Digital Elevation Model
    NASA/GCMD Data Resolution Keywords
    • 1 meter - < 30 meters
    • < 1 meter
    Uncontrolled
    • Coastal Relief
    • Gridded elevations
    • Integrated bathymetry and 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
    Place keywords Global Change Master Directory (GCMD) Location Keywords
    • Ocean > Pacific Ocean
    • Vertical Location > Land Surface
    • Vertical Location > Sea Floor
    Uncontrolled
    • Astoria
    • Pacific Coast
    • Oregon
    • Washington
    • Columbia River
    Keywords
      Keywords
        Use Constraints No constraint information available
        Fees Fee information not available.
        Lineage information for: dataset
        Processing Steps
        • 2012-04-05T00:00:00 - All datasets obtained by NCEI were converted to common horizontal and vertical datums of WGS 84 geographic and NAVD 88, respectively, using VDatum. They were also converted to common file format for visualization and inspection.
        • 2012-04-15T00:00:00 - Datasets were visually inspected with ArcGIS for identification and editing of data anomalies. Datasets were then compared with overlapping datasets to ensure data consistency.
        • 2012-04-16T00:00:00 - xyz files of the bathymetric data were surfaced using GMT's 'surface' tool onto a 1/3 arc-second grid that interpolated to fill empty cells. Points extracted every 5 meters along the coastline were also included to ensure that the bathymetric grid reached zero at the coast. The resulting Arc ASCII grid was imported into ArcGIS and clipped to the coastline to remove values over land.
        • 2012-04-17T00:00:00 - 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.
        • 2012-04-20T00:00:00 - The DEM was quantitatively evaluated by comparing with source datasets.
        • 2013-10-10T00:00:00 - The DEM was updated to correct a vertical datum problem in bathymetric areas.
        Processing Environment Native Dataset Environment: Linux 4.1.6-200.fc22.x86_64 #1 x86_64 GNU/Linux
        Source Datasets
        • NCEI Multibeam Bathymetry Database
          • NCEI Multibeam Bathymetry Database (download)
            Multibeam Swath Sonar Survey Data
          • Description of Source: Source Contribution: Swath Sonar Survey Data
          • Temporal extent used: 1996-01-01 to 2014-01-01
        • 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
          • Temporal extent used: 1936-00-01 to 2008-01-01
        • 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
          • Temporal extent used: 1928-01-01 to 2014-01-01
        • 2010 USACE Lidar: Columbia River (OR,WA) (NAVD88)
          • NOAA OCM Digital Coast (download)
            This centralized, user-friendly, and cost-effective information repository was developed by the NOAA's Office for Coastal Management for the coastal managers, planners, decision-makers, and technical users who are charged to manage the nation???s coastal and ocean resources to sustain vibrant coastal communities and economies.
          • Description of Source: Source Contribution: Topographic Lidar LAS
          • Temporal extent used: 2009-11-16 to 2010-07-02
        • 2002 NOAA Lidar: Willapa Bay, WA Mudflat(NAVD88)
          • NOAA OCM Digital Coast (download)
            This centralized, user-friendly, and cost-effective information repository was developed by the NOAA's Office for Coastal Management for the coastal managers, planners, decision-makers, and technical users who are charged to manage the nation???s coastal and ocean resources to sustain vibrant coastal communities and economies.
          • Description of Source: Source Contribution: Topographic Lidar LAS
          • Temporal extent used: 2002-03-26 to 2002-04-24
        • 2009-2011 USACE NCMP Topobathy Lidar: Pacific Coast (OR,WA) (NAVD88)
          • NOAA OCM Digital Coast (download)
            This centralized, user-friendly, and cost-effective information repository was developed by the NOAA's Office for Coastal Management for the coastal managers, planners, decision-makers, and technical users who are charged to manage the nation???s coastal and ocean resources to sustain vibrant coastal communities and economies.
          • Description of Source: Source Contribution: Topobathy Lidar LAS
          • Temporal extent used: 2010-06-18 to 2011-06-10
        • VDatum software v. 3.4
          • VDatum (download)
            Vertical Datum Transformation tool
          • Description of Source: Source Contribution: vertical datum transformation tool
          • Temporal extent used: Unknown to
        Last Modified: 2018-02-14
        For questions about the information on this page, please email: dem.info@noaa.gov