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Definitions Edit

Elevation data "provide three-dimensional models of the Earth’s surface."[1]

Elevation data

encode the bare-earth elevation of the topography for an area, devoid of vegetation and structures. The data may be organized in a number of forms, including contours, mass points, breaklines, triangulated irregular networks, and digital elevation models (regularly spaced grids).[2]
refers to datasets that identify the height of the ground at specific locations. These datasets are a component of the models that determine where water flows and what the water surface elevation will be for specific floods. The density of points in the collection may vary based on the needs of the data collector.[3]

References Edit

  1. Geospatial Information: OMB and Agencies Need to Make Coordination a Priority to Reduce Duplication, at 24 n.43.
  2. Geospatial Data Coordination Implementation Guide, at 41.
  3. Id. at iii.

See also Edit

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