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This is a Non-Federal dataset covered by different Terms of Use than

USGS 1 arc-second Digital Elevation Model

Metadata Updated: September 3, 2021

This is a 1 arc-second (approximately 30 m) resolution tiled collection of the 3D Elevation Program (3DEP) seamless data products . 3DEP data serve as the elevation layer of The National Map, and provide 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 compose an elevation dataset that consists of seamless layers and a high resolution layer. Each of these layers consists of the best available raster elevation data of the conterminous United States, Alaska, Hawaii, territorial islands, Mexico and Canada. 3DEP data are 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 conterminous United States, are referenced to the North American Vertical Datum of 1988 (NAVD 88). The vertical reference will vary in other areas. The elevations in these DEMs represent the topographic bare-earth surface. All 3DEP products are public domain. This dataset includes data over Canada and Mexico as part of an international, interagency collaboration with the Mexico's National Institute of Statistics and Geography (INEGI) and the Natural Resources Canada (NRCAN) Centre for Topographic Information-Sherbrook, Ottawa. For more details on the data provenance of this dataset, visit here and here. Click here for a broad overview of this dataset

Access & Use Information

Non-Federal: This dataset is covered by different Terms of Use than License: No license information was provided.

Downloads & Resources


Metadata Date June 18, 2021
Metadata Created Date September 3, 2021
Metadata Updated Date September 3, 2021
Reference Date(s) June 18, 2021 (publication)
Frequency Of Update

Metadata Source

Harvested from OpenTopography CSW

Additional Metadata

Resource Type Dataset
Metadata Date June 18, 2021
Metadata Created Date September 3, 2021
Metadata Updated Date September 3, 2021
Reference Date(s) June 18, 2021 (publication)
Responsible Party null (Originator)
Contact Email
Guid OT.012021.4269.2
Access Constraints
Bbox East Long 164.0016666666
Bbox North Lat 84.00166666666
Bbox South Lat -15.00166666667
Bbox West Long -174.001666666983
Coupled Resource
Frequency Of Update
Harvest Object Id c25267ee-cc07-4898-97da-03b6ad136bc3
Harvest Source Id 1017486a-47c7-4139-9ed4-a4d93503679a
Harvest Source Title OpenTopography CSW
Metadata Language en
Metadata Type geospatial
Old Spatial {"type": "Polygon", "coordinates": [[[-174.001666667, -15.0016666667], [164.001666667, -15.0016666667], [164.001666667, 84.0016666667], [-174.001666667, 84.0016666667], [-174.001666667, -15.0016666667]]]}
Spatial Data Service Type
Spatial Reference System North American Datum 1983 (NAD83) [EPSG: 4269]
Spatial Harvester True

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