Puget Sound 1/3 arc-second MHW Coastal Digital Elevation Model

browse graphicArcGIS Hillshade DEM
NOAA's National Geophysical Data Center (NGDC) 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 National Tsunami Hazard Mitigation Program's (NTHMP) efforts to improve community preparedness and hazard mitigation. Bathymetric, topographic, and shoreline data used in DEM compilation are obtained from various sources
including: NGDC; the U.S. Geological Survey (USGS); Naval Oceanographic Office (NAVOCEANO); NOAA's Coastal Service Center; and other federal, state, and local government agencies, academic institutions, and private companies. DEMs are referenced to the vertical tidal datum of Mean High Water (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:5164
Download Data
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 1894-01-01 to 2014-01-01
    Spatial Bounding Box Coordinates
    N: 48.19
    S: 47.01
    E: -122.16
    W: -123.18
    Spatial Coverage Map
    General Documentation
    Associated Resources
    Publication Dates
    • publication: 2014-06-24
    Edition First
    Data Presentation Form mapDigital
    Dataset Progress Status Complete - production of the data has been completed
    Data Update Frequency As needed
    Purpose Developed for the National Tsunami Hazard Mitigation Program 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.
    Originators
    • DOC/NOAA/NESDIS/NGDC > National Geophysical Data Center, NESDIS, NOAA, U.S. Department of Commerce
    Collaborators
    • National Tsunami Hazard Mitigation Program (NTHMP)
    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 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
    • Earth Science > Land Surface > Topography > Terrain Elevation > Topographical Relief Maps
    • Earth Science > Oceans > Coastal Processes > Coastal Elevation
    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
    Platform keywords Global Change Master Directory (GCMD) Platform Keywords
    • Models/Analyses > DEM > Digital Elevation Model
    Place keywords Global Change Master Directory (GCMD) Location Keywords
    • Ocean > Pacific Ocean
    • Ocean > Pacific Ocean > North Pacific Ocean
    • Vertical Location > Land Surface
    • Vertical Location > Sea Floor
    Puget Sound
    • Puget Sound
    • Washington
    • Seattle
    • Tacoma
    • Everett
    • Port Angeles
    • Port Townsend
    • Bainbridge Island
    • Whidbey Island
    • Bremerton
    • Vashon Island
    • Olympia
    Data Resolution keywords Global Change Master Directory (GCMD) Horizontal Data Resolution Keywords
    • 1 meter - < 30 meters
    Global Change Master Directory (GCMD) Vertical Data Resolution Keywords
    • < 1 meter
    Keywords
      Keywords
        Use Constraints No constraint information available
        Fees Fee information not available.
        Lineage information for: dataset
        Processor
        • DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce
        Processing Steps
        • 2014-04-09T00:00:00 - All datasets obtained by NGDC 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.
        • 2014-04-23T00:00:00 - Datasets were visually inspected with ArcGIS for identification and editing of data anomalies. Datasets were then compared with overlapping datasets to ensure data consistency.
        • 2014-05-13T00:00:00 - 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.
        • 2014-05-20T00:00:00 - 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.
        • 2014-06-10T00:00:00 - The DEM was quantitatively evaluated by comparing with source datasets.
        • 2014-06-13T00:00:00 - A conversion grid based on VDatum was added to the NAVD 88 DEM to generate a MHW DEM.
        Processing Environment Native Dataset Environment: Microsoft Windows 2000 Version 5.2 (Build 3790) Service Pack 2; ESRI ArcCatalog 9.2.4.1420
        Source Datasets
        • 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: Unknown to
        • 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: 1894-01-01 to 2011-01-01
        • Puget Sound Lidar Consortium
          • PSLC lidar (download)
            PSLC topographic and bathymetric/topographic lidar data
          • Description of Source: Source Contribution: lidar data
          • Temporal extent used: 1996-01-01 to 2012-01-01
        • Hydrographic sounding data of select Puget Sound Harbors
          • Condition survey data of select Puget Sound Harbors (download)
            Hydrographic Sounding at intervals, along Project design lines spaced at specific intervals.
          • Description of Source: Source Contribution: hydrographic sounding data
          • Temporal extent used: 2008-01-01 to 2014-01-01
        • VDatum software v. 3.2
          • VDatum (download)
            Vertical Datum Transformation tool
          • Description of Source: Source Contribution: vertical datum transformation tool ; Source Type: online
          • Temporal extent used: Unknown to
        • VDatum software v. 3.2
          • VDatum (download)
            Vertical Datum Transformation tool
          • Description of Source: Source Contribution: vertical datum transformation tool ; Source Type: online
          • Temporal extent used: Unknown to
        • VDatum software v. 3.2
          • VDatum (download)
            Vertical Datum Transformation tool
          • Description of Source: Source Contribution: vertical datum transformation tool ; Source Type: online
          • Temporal extent used: Unknown to
        Last Modified: 2017-11-30
        For questions about the information on this page, please email: dem.info@noaa.gov