USGS - science for a changing world
National Severe Storms Laboratory Environmental Protection Agency

Elevation Derivatives for National Applications (EDNA)

EDNA Stage 1 Data Layers

Aspect (47K)


File Type:    Grid-Integer
Valid values:

Values for Grid

Description: Downslope direction of maximum rate of change from one pixel to its neighbors. Non-defined aspect (slope = 0) are assigned a value of -1. Aspect values are floating point and range from 0 to 360.

Accessibility FOIA Privacy Policies and Notices logo U.S. Department of the Interior | U.S. Geological Survey
Page Contact Information:
Page Last Modified: May 25, 2005