LANDFIRE-Topographic Product Descriptions

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Data Product Descriptions

Data Products ›› Topographic Product Descriptions

Aspect

Aspect represents the azimuth of the sloped surfaces across a landscape. Aspect data for LANDFIRE were provided by the Elevation Derivatives for National Applications (EDNA) dataset. EDNA topographic data were derived from the National Elevation Dataset (NED). NED comprises merged 7.5 minute quadrangle topographic data resulting in a high quality, consistent elevation data set that spans the entire United States. The units of measurement for the LANDFIRE Aspect layer are degrees.