Skip to main content
Skip to site search

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

browse graphicThumbnail of DEM
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
XML
Download Data
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 1933-01-01 to 2014-04-23
Spatial Reference System urn:ogc:def:crs:EPSG::4326urn:ogc:def:datum:EPSG::5868
Spatial Bounding Box Coordinates
West:-124.59
East:-123.60
South:45.90
North:47.16
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
  • 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.
Collaborators
  • Pacific Marine Environmental Laboratory (PMEL)
Publishers
  • NOAA National Centers for Environmental Information
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
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
  • Vertical Location > Land Surface
  • Vertical Location > Sea Floor
Uncontrolled
  • Astoria
  • Pacific Coast
  • Oregon
  • Washington
  • Columbia River
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.
Fees Fee information not available.
Lineage information for:dataset
Processor
  • NOAA National Centers for Environmental Information
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
    • Time Instant: 2014-05-13
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: 2022-03-25
For questions about the information on this page, please email:dem.info@noaa.gov