USGS NED n71w118 1 arc-second 2013 1 x 1 degree ArcGrid

Metadata Updated: August 13, 2017

This is a tile of the National Elevation Dataset (NED) is 1 arc-second resolution. The National Elevation Dataset (NED) serves the elevation layer of The National Map, and provides basic elevation information for earth science studies and mapping applications in the United States. Scientists and resource managers use NED data for global change research, hydrologic modeling, resource monitoring, mapping and visualization, and many other applications. The NED is an elevation dataset that consists of seamless layers and a high resolution layer. Each of these layers are composed of the best available raster elevation data of the conterminous United States, Alaska, Hawaii, territorial islands, Mexico and Canada. The NED is updated continually as new data become available. All NED data are in the public domain. The 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 (NAVD 88). The vertical reference will vary in other areas. NED data are available nationally (except for Alaska) at resolutions of 1 arc-second (approx. 30 meters) and 1/3 arc-second (approx. 10 meters), and in limited areas at 1/9 arc-second (approx. 3 meters). In most of Alaska, only lower resolution source data are available. As a result, most NED data for Alaska are at 2-arc-second (approx. 60 meters) grid spacing. Part of Alaska is available at the 1- and 1/3-arc-second resolution from IFSAR collections starting in 2010. Plans are in place for collection of statewide IFSAR in Alaska through 2016.

Access & Use Information

Collection

This dataset is part of the following collection:

Downloads & Resources

Dates

Metadata Date April 1, 2016
Metadata Created Date July 19, 2017
Metadata Updated Date August 13, 2017
Reference Date(s) January 1, 2013 (publication)
Frequency Of Update asNeeded

Metadata Source

Harvested from 1 Arc-second Digital Elevation Models (DEMs) - USGS National Map

Graphic Preview

Thumbnail JPG image

Additional Metadata

Resource Type Dataset
Metadata Date April 1, 2016
Metadata Created Date July 19, 2017
Metadata Updated Date August 13, 2017
Reference Date(s) January 1, 2013 (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 http://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 -116.9983333334
Bbox North Lat 71.00166666666
Bbox South Lat 69.99833333333
Bbox West Long -118.0016666667
Collection Package Id 4c7396d3-21c7-4cc2-8c34-e42c4cc50ec3
Coupled Resource
Frequency Of Update asNeeded
Graphic Preview Description Thumbnail JPG image
Graphic Preview File https://prd-tnm.s3.amazonaws.com/StagedProducts/Elevation/1/ArcGrid/grdn71w118_1_thumb.jpg
Graphic Preview Type JPEG
Guid
Harvest Object Id a3f3b51d-895f-4ef9-9752-75bf9b70d25f
Harvest Source Id 1cef56f4-b56e-4835-886c-6db830e7eee6
Harvest Source Title 1 Arc-second Digital Elevation Models (DEMs) - USGS National Map
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 1999-02-01
Temporal Extent End 2013-11-01

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