USGS National Elevation Dataset 1/3 Arc-Second [deprecated]

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dem elevation geophysical ned topography usgs


The National Elevation Dataset (NED) used to be* the primary elevation data product of the USGS. The NED is a seamless dataset with the best available raster elevation data of the conterminous United States, parts of Alaska, Hawaii, and some territorial islands. The NED is derived from diverse source data that are processed to a common coordinate system and unit of vertical measure. NED data are distributed 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.

*For over 15 years, the NED was the primary elevation data product of the USGS' National Map. However, it has been renamed and now considered just one component of elevation in The National Map after the 3D Elevation Program became operational.



Name Units Min Max Pixel Size Description
elevation m -85.61* 4414.22* 10.2 meters


* estimated min or max value

Terms of Use

Terms of Use

Most U.S. Geological Survey (USGS) information resides in the public domain and may be used without restriction. Additional information on Acknowledging or Crediting USGS as Information Source is available.


  • USGS National Elevation Dataset courtesy of the U.S. Geological Survey

Explore with Earth Engine

Code Editor (JavaScript)

var dataset = ee.Image('USGS/NED');
var elevation ='elevation');
var elevationVis = {
  min: 0.0,
  max: 4000.0,
  gamma: 1.6,
Map.setCenter(-100.55, 40.71, 5);
Map.addLayer(elevation, elevationVis, 'Elevation');
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