3D Elevation Program

Standards and Specifications

3DEP Standards and Specifications

3DEP Standards and Specifications

Products of the 3D Elevation Program are built upon the most current applicable standards for geospatial data.  

Standards and Specs

3DEP Spatial Metadata

3DEP Spatial Metadata

The Work unit Extent Spatial Metadata is a good source of information for current lidar data availability and basic information about lidar projects.

View Metadata

Topographic Data Quality Levels

 Topographic Data Quality Levels

The concept of topographic quality levels (QLs) was originally defined in the National Enhanced Elevation Assessment report by Dewberry and further defined in the 3DEP Lidar Base Specification (LBS).

About Quality Levels