USGS NED Digital Surface Model AK Ifsar-LowerSE-L3-C379 2012 TIFF 2016

Metadata Updated: September 23, 2017

These data are Digital Surface Models (DSM) derived from interferometric synthetic aperture radar (ifsar) data. A DSM is a 3 dimensional representation of surface elevations in an area, including elevations of man-made structures and vegetation. The USGS performs minimal quality assurance and no reprocessing of the DSM data. USGS distributes the DSM data as received from the contractors, partners or contributing entities.

Access & Use Information


This dataset is part of the following collection:

Downloads & Resources


Metadata Date July 6, 2016
Metadata Created Date September 23, 2017
Metadata Updated Date September 23, 2017
Reference Date(s) June 21, 2016 (publication)
Frequency Of Update asNeeded

Metadata Source

Harvested from Alaska Digital Surface Models (DSMs) - USGS National Map

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Thumbnail JPG image

Additional Metadata

Resource Type Dataset
Metadata Date July 6, 2016
Metadata Created Date September 23, 2017
Metadata Updated Date September 23, 2017
Reference Date(s) June 21, 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be aware that temporal changes may have occurred since these data were collected and that some parts of these data may no longer represent actual surface conditions.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 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 -130.849669391182
Bbox North Lat 56.0486635212291
Bbox South Lat 54.9501613154238
Bbox West Long -132.144036640123
Collection Package Id 209ef57c-6264-4d8d-8523-efe24b64016a
Coupled Resource
Frequency Of Update asNeeded
Graphic Preview Description Thumbnail JPG image
Graphic Preview File
Graphic Preview Type JPEG
Harvest Object Id b6b1c590-bf9c-4574-bf6c-b2525e8c4c5a
Harvest Source Id 246e6859-2e0d-4094-a371-d3cba0e3ed7b
Harvest Source Title Alaska Digital Surface Models (DSMs) - 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 completed
Spatial Data Service Type
Spatial Reference System
Spatial Harvester True
Temporal Extent Begin 2012-08-14
Temporal Extent End 2012-09-08

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