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  • 1/3rd Arc-second Digital Elevation Models (DEMs) - USGS National Map 3DEP Downloadable Data Collection

    Metadata Updated: January 24, 2017

    This layer of the National Elevation Dataset (NED) is 1/3 arc-second (approximately 10 m) resolution. The1/3 arc-second NED are derived from diverse source data that are processed to a common coordinate system and unit of vertical measure. These data are distributed in geographic coordinates in units of decimal degrees, and in conformance with the North American Datum of 1983 (NAD 83). All elevation values are in meters and, over the continental United States, are referenced to the North American Vertical Datum of 1988 (NAVD88). The 1/3 arc-second NED layer provides seamless coverage of the conterminous United States, Hawaii, Puerto Rico, other territorial islands, and in limited areas of Alaska. The 1/3 arc-second NED layer is available as pre-staged products tiled in 1 degree blocks in Erdas .img, ESRI arc-grid, and grid float formats. The NED is updated continually as new data become available. All NED data are in the public domain.

    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.

    Collection

    This dataset is a collection of other datasets.

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    Dates

    Metadata Date December 7, 2016
    Metadata Created Date August 5, 2014
    Metadata Updated Date January 24, 2017
    Reference Date(s) January 1, 2016 (publication)
    Frequency Of Update asNeeded

    Metadata Source

    Harvested from National Elevation Dataset (NED) 1/3 arc-second Collection

    Graphic Preview

    Thumbnail JPG image

    Additional Metadata

    Resource Type Dataset
    Metadata Date December 7, 2016
    Metadata Created Date August 5, 2014
    Metadata Updated Date January 24, 2017
    Reference Date(s) January 1, 2016 (publication)
    Responsible Party U.S. Geological Survey (Point of Contact)
    Contact Email
    Access Constraints Use Constraints: There is no guarantee or warranty concerning the accuracy of the data. Users should be aware that temporal changes may have occurred since these data were collected and that some parts of these data may no longer represent actual surface conditions. Users should not use these data for critical applications without a full awareness of its limitations. Acknowledgement of the originating agencies would be appreciated in products derived from these data. Any user who modifies the data is obligated to describe the types of modifications they perform. User specifically agrees not to misrepresent the data, nor to imply that changes made were approved or endorsed by the USGS. Please refer to https://www.usgs.gov/privacy.html for the USGS disclaimer., Access Constraints: None. Any downloading and use of these data signifies a user's agreement to comprehension and compliance of the USGS Standard Disclaimer. Insure all portions of metadata are read and clearly understood before using these data in order to protect both user and USGS interests.
    Bbox East Long 163.066623
    Bbox North Lat 72.000043
    Bbox South Lat -14.383287
    Bbox West Long -170.850043
    Collection Metadata true
    Coupled Resource
    Frequency Of Update asNeeded
    Graphic Preview Description Thumbnail JPG image
    Graphic Preview File https://thor-f5.er.usgs.gov/ngtoc/metadata/waf/collections/ned_13_col_thumbnail.jpg
    Graphic Preview Type JPEG
    Guid
    Harvest Object Id aea39d08-20fb-4f17-852b-212c161e2855
    Harvest Source Id 709ff9b2-9a8e-4228-a05b-3a9937873dac
    Harvest Source Title National Elevation Dataset (NED) 1/3 arc-second Collection
    Licence Although these data have been processed successfully on a computer system at the U.S. Geological Survey, no warranty, expressed or implied, is made by either regarding the utility of the data on any system, nor shall the act of distribution constitute any such warranty. The USGS will warranty the delivery of this product in computer-readable format and will offer appropriate adjustment of credit when the product is determined unreadable by correctly adjusted computer peripherals, or when the physical medium is delivered in damaged condition. Requests for adjustments of credit must be made within 90 days from the date of this shipment from the ordering site.
    Metadata Language
    Metadata Type geospatial
    Progress underDevelopment
    Spatial Data Service Type
    Spatial Reference System
    Spatial Harvester True
    Temporal Extent Begin 1923-01-01

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