Data Products ›› Topographic

The Elevation Derivatives for National Applications (EDNA) database was completed by a consortium:

• U.S. Geological Survey (USGS) Earth Resources Observation and Science (EROS) Center
• USGS National Mapping Division (now the National Geospatial Program)
• USGS Water Resources Division (now the USGS Water Resources of the United States (WRD))
• National Oceanic and Atmospheric Administration (NOAA) National Severe Storms Laboratory (NSSL)
• U.S. Environmental Protection Agency (EPA)

Products
Topographic
Aspect - azimuth of the sloped surfaces across a landscape Elevation - land height (meters) above mean sea level Slope - percent change of elevation over a specific area

Application

Topographic data serve as input to the Landscape (.LCP) file which is used in models to predict wildland fire behavior and effects.