The high-resolution data for southwestern Louisiana (New Orleans) was available online, and thus proved to be a valuable asset for geospatial data users that were responding to the aftermath of the disaster. The lidar-derived elevation data helped tremendously in creating a rough mapping of the depth and extent of the inundation created by Katrina. In the future, by combining the precise elevation information from lidar with accurate ground-based water-level information and inundation delineations derived from remote sensing, a complete history of flooding and water removal can be reconstructed.
Gesch, D. (2005). Topography-based analysis of Hurricane Katrina inundation of New Orleans. Science and the storms: The USGS Response to the Hurricanes of.