Elevation Specification Resources
3DEP
Lidar Base Specification
LBS Revision Status
Lidar Error Dictionary
A variety of resources supporting the acquisition, processing, validation, and publication of 3DEP elevation data are available through these Elevation Specification Resources pages. This includes Lidar Base Specification suporting and background information, the Lidar Error Dictionary, the Spatial Metadata Data Dictionary, and other explanatory information.
Lidar Error Dictionary
Lidar Error Dictionary
The purpose of this dictionary is to provide standardized language to describe commonly encountered errors associated with lidar datasets submitted to the USGS data validation unit for ingestion into the National Map.
3DEP Spatial Metadata
3DEP Spatial Metadata
Spatial metadata for the 3D Elevation Program (3DEP) is now published and available by work unit in the Work unit Extent Spatial Metadata (WESM) geopackage.