What happened to the Gridfloat, ArcGrid, and IMG formats for elevation data in The National Map?

USGS elevation data available through The National Map was converted to Cloud Optimized Geotiff (COG - GeoTIFF) format in mid-December, 2019. This change was made to improve product processing time, storage, and to support new and evolving cloud processing capabilities. 

GeoTIFF is a widely supported raster format and is directly useable by most commercial software that reads or processes Digital Elevation Model (DEM) data.  GeoTIFF DEMs will fit seamlessly into most workflows.

Instructions and translator scripts for converting from GeoTIFF to FLT format (Gridfloat) and for converting GeoTIFF to IMG format can be found on the Raster Conversion page.

For additional questions, please send an email to our National Map Help Desk: tnm_help@usgs.gov.

Learn more: USGS Digital Elevation Models (DEM) Switching to New Distribution Format.

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August 28, 2020

Lidar Base Specification 2020 rev. A is now available

The 3DEP Lidar Base Specification 2020 rev. A is now available! 

This release of the Lidar Base Specification (LBS) introduces a new version naming convention to aid in tracking revisions and to clarify the year of release. This and following releases will labeled with "YYYY rev. L" where YYYY is the year of the release and L is a letter corresponding to the order of the release. 

Date published: October 23, 2019

USGS Digital Elevation Models (DEM) Switching to New Distribution Format

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USGS 3DEP Lidar Point Cloud Now Available as Amazon Public Dataset

The USGS 3D Elevation Program (3DEP) is excited to announce the availability of a new way to access and process lidar point cloud data from the 3DEP repository.

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Cloud Hosting Solutions
December 31, 2020

Cloud Hosting Solutions

Cloud Hosting Solutions provides a cloud-based enterprise environment that supports hosted applications and a collection of services to advance the mission of the U.S. Geological Survey (USGS).

Attribution: Science Support
October 4, 2015

Using The National Map Download Client

Lesson 4a: Using The National Map Download Client - This video provides a brief introduction to using The National Map Download Client interface.

Please note that some of our URLs in the video have changed. All URLs beginning with 'viewer.nationalmap.gov/...' have been updated to 'apps.nationalmap.gov/...'. These URLs should reroute automatically, but if you have an

LiDAR point cloud from the Yellowscan VX20 scanner of the Downing Reservoir on the Denver Federal Center

LiDAR point cloud from Yellowscan VX20 of Downing Reservoir on the DFC

UAS LiDAR point cloud from the Yellowscan VX20 (Riegl miniVUX-1 UAV) scanner of the Downing Reservoir located at the Denver Federal Center, CO.  The blue-green-yellow-red color ramp represents height-above-ground measured distances.  The building structures within the scan validate the measured point cloud lidar distances with known true distances taken in the field.