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    • NOAA Office for Coastal Management Coastal Inundation Digital Elevation Model: Portland (OR) WFO - Clatsop, Columbia, and Multnomah Counties

    Metadata Updated: March 16, 2024

    This digital elevation model (DEM) is a part of a series of DEMs produced for the National Oceanic and Atmospheric Administration Office for Coastal Management's Sea Level Rise and Coastal Flooding Impacts Viewer. The DEMs created for this project were developed using the NOAA National Weather Service's Weather Forecast Office (WFO) boundaries. Because the WFO boundaries can cover large areas, the WFO DEM was divided into smaller DEMs to ensure more manageable file sizes. The Portland (OR) WFO DEM was split into two smaller DEMs. They are divided along county lines and are: 1. Portland (OR) WFO - Tillamook, Lincoln, and Lane Counties 2. Portland (OR) WFO - Clatsop, Columbia, and Multnomah Counties This metadata record describes the DEM for the Portland (OR) WFO - Clatsop, Columbia, and Multnomah Counties. The DEM includes the best available lidar data known to exist at the time of DEM creation for the coastal areas of Clatsop, Columbia, and Multnomah counties, that met project specifications. Please note that the Portland WFO boundary extends into Washington state. The Washington portion of the WFO is also available for download from NOAA OCM as a separate product. The DEM is derived from LiDAR datasets collected for the Oregon Department of Geology and Mineral Industries (DoGAMI) and the U.S. Army Corps of Engineers (USACE). LiDAR data for a portion of Clatsop County, was collected for DoGAMI in 2008-2009. LiDAR data along the Columbia River in Clatsop, Columbia and Multnomah counties was collected for USACE in 2010. Hydrographic breaklines used in the creation of the DEM were delineated using LiDAR intensity imagery generated from the DoGAMI datasets and were also obtained from USACE. The DEMs are hydro flattened such that water elevations are less than or equal to 0 meters. The DEM is referenced vertically to the North American Vertical Datum of 1988 (NAVD88) with vertical units of meters and horizontally to the North American Datum of 1983 (NAD83). The resolution of the DEM is approximately 5 meters.

    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 February 29, 2024
    Metadata Created Date November 12, 2020
    Metadata Updated Date March 16, 2024
    Reference Date(s) 2012 (publication)
    Frequency Of Update notPlanned

    Metadata Source

    Harvested from NOS OCM

    Other Data Resources

    Additional Metadata

    Resource Type Dataset
    Metadata Date February 29, 2024
    Metadata Created Date November 12, 2020
    Metadata Updated Date March 16, 2024
    Reference Date(s) 2012 (publication)
    Responsible Party NOAA Office for Coastal Management (Point of Contact, Custodian)
    Contact Email
    Guid gov.noaa.nmfs.inport:48113
    Access Constraints Cite As: Office for Coastal Management, [Date of Access]: NOAA Office for Coastal Management Coastal Inundation Digital Elevation Model: Portland (OR) WFO - Clatsop, Columbia, and Multnomah Counties [Data Date Range], https://www.fisheries.noaa.gov/inport/item/48113., Access Constraints: None, Use Constraints: The dataset is provided "as is," without warranty to its performance, merchantable state, or fitness for any particular purpose. The entire risk associated with the results and performance of this dataset is assumed by the user. This dataset should be used strictly as a planning reference and not for navigation, permitting, or other legal purposes., Distribution Liability: Any conclusions drawn from the analysis of this information are not the responsibility of the Office for Coastal Management or its partners.
    Bbox East Long -121.819108802
    Bbox North Lat 46.3000189404
    Bbox South Lat 45.4316089404
    Bbox West Long -124.160863802
    Coupled Resource
    Frequency Of Update notPlanned
    Harvest Object Id eaa2926e-0c8c-41b8-a362-d7f090724f20
    Harvest Source Id c0121fd9-df15-4168-ac04-42f6e36a794d
    Harvest Source Title NOS OCM
    Licence NOAA provides no warranty, nor accepts any liability occurring from any incomplete, incorrect, or misleading data, or from any incorrect, incomplete, or misleading use of the data. It is the responsibility of the user to determine whether or not the data is suitable for the intended purpose.
    Lineage
    Metadata Language eng
    Metadata Type geospatial
    Old Spatial {"type": "Polygon", "coordinates": [[[-124.160863802, 45.4316089404], [-121.819108802, 45.4316089404], [-121.819108802, 46.3000189404], [-124.160863802, 46.3000189404], [-124.160863802, 45.4316089404]]]}
    Progress completed
    Spatial Data Service Type
    Spatial Reference System
    Spatial Harvester True
    Temporal Extent Begin 2008
    Temporal Extent End 2010

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