USGS NED 1 arc-second n43w118 1 x 1 degree GridFloat 2017

This tile of the 3D Elevation Program (3DEP) seamless products is 1 arc-second resolution. 3DEP data serves as 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 3DEP data for global change research, hydrologic modeling, resource monitoring, mapping and visualization, and many other applications. 3DEP data 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. 3DEP data is updated continually as new data become available. Seamless 3DEP data 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. Seamless 3DEP data are available nationally (except for Alaska) at resolutions of 1 arc-second (approx. 30 meters) and 1/3 arc-second (approx. 10 meters). In most of Alaska, only lower resolution source data are available. As a result, most seamless 3DEP 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. All 3DEP products are public domain.

Downloads & Resources

Harvest Source

Field Value
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be aware that temporal changes may have occurred since these data were collected and that some parts of these data may no longer represent actual surface conditions.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 -116.998333333113
bbox-north-lat 43.0016666663847
bbox-south-lat 41.998333333018
bbox-west-long -118.00166666648
collection_package_id 4c7396d3-21c7-4cc2-8c34-e42c4cc50ec3
coupled-resource []
dataset-reference-date [{"type": "publication", "value": "2017-04-17"}]
frequency-of-update asNeeded
graphic-preview-description Thumbnail JPG image
graphic-preview-type JPEG
harvest_object_id e67f3932-8ddf-4638-9e10-5ba2ad03f2fa
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-date 2017-04-18
metadata_type geospatial
progress underDevelopment
resource-type dataset
responsible-party [{"name": "U.S. Geological Survey", "roles": ["pointOfContact"]}]
spatial {"type": "Polygon", "coordinates": [[[-118.001666666, 41.998333333], [-116.998333333, 41.998333333], [-116.998333333, 43.0016666664], [-118.001666666, 43.0016666664], [-118.001666666, 41.998333333]]]}
spatial_harvester True
temporal-extent-begin 1954-01-01
temporal-extent-end 2016-01-01