3D Elevation Program (3DEP)


Elevation Theme Co-Leads

  • Terrestrial Elevation - U.S. Geological Survey (USGS)
  • Bathymetric Elevation - National Oceanic and Atmospheric Administration (NOAA)

3D Nation Subcommittee

3D Nation Subcommittee

The goal of the 3D Nation Elevation Subcommittee of the FGDC is to continually improve the national elevation mapping foundation by coordinating the topographic, coastal, and bathymetric mapping activities across the Federal government. 

FGDC Subcommittee

NGDA Elevation Theme

NGDA Elevation Theme

The Elevation Theme team has adopted a vision of the U.S. as a 3D nation, uniting terrestrial and coastal/ocean mapping agencies in common purpose to achieve an authoritative national geospatial foundation in support of national mapping needs.

NGDA GeoPlatform
    3DEP Governance Hierarchy

    Governance structure of the National Geospatial Data Asset (NGDA) Elevation Theme

    Theme Definition

    “The measured vertical position of the earth surface and other landscape or bathymetric features relative to a reference datum typically related to sea level. These points normally describe bare earth positions but may also describe the top surface of buildings and other objects, vegetation structure, or submerged objects. Elevation data can be stored as a three-dimensional point cloud or as a continuous surface such as a raster, triangulated irregular network, or contours. Elevation data may also be represented in other derivative forms such as slope, aspect, ridge and drainage lines, and shaded relief.”