Surface Roughness or Terrain is related to the average height and density of surface elements such as buildings and trees. Topography is the variation in elevation of the earth's surface without any consideration of vegetation or man-made structures. In HAZUS, surface roughness is modeled for all hurricane study regions, but topographic effects are modeled only for study regions in Hawaii.
For additional information, the HAZUS User's Manuals and guidance materials are available for download from HAZUS Resources on this site.
Need Additional Help?
Email: HAZUSGenHelp@nibs.org for general questions about HAZUS
HAZUSWindHelp@ara.com for Hurricane Model questions
Last Modified: Thursday, 08-Nov-2007 10:00:59 EST