Overview


Elevation 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 array 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.

Updated on April 4, 2019
Elevation Theme

Community Type: NGDA

Sponsor: FGDC

Sponsor Email: NGDATeam@fgdc.gov

Theme Lead Agency: National Oceanic and Atmospheric Administration (NOAA), United States Geological Survey (USGS)

Theme Lead: Ashley Chappell (NOAA), Diane Eldridge (USGS)