The research by hydrologists and land-use experts at
"The takeaway from this study, which was borne out in Harvey, is that many losses occur in areas outside FEMA's 100-year flood plain," said study co-author Antonia Sebastian, a research associate at Rice's Severe Storm Prediction, Education and Evacuation from Disasters (SSPEED) Center and a postdoctoral researcher at Delft University of Technology in the Netherlands.
"What we've tried to show, both with this study and several others, is that it is possible to do better," said lead author Russell Blessing, a Texas A&M-Galveston graduate student with joint appointments at the SSPEED Center and Texas A&M-Galveston's Center for Texas Beaches and Shores. "There are innovative computational and hydrological tools available to build more predictive maps."
In the new study, Blessing, Sebastian and co-author Sam Brody, a professor of marine sciences at Texas A&M-Galveston, director of the Center for Texas Beaches and Shores and a SSPEED Center investigator, examined the Armand Bayou watershed in southeast Harris County. Armand Bayou's 60-square-mile watershed includes portions of Houston, Pasadena, Deer Park, La Porte and Taylor Lake Village, as well as unincorporated portions of Harris County.
Five major rain events occurred in the study area between 1999-2009. They were Hurricane Ike (2008), Tropical Storms Erin (2007) and Allison (2001, and two rainstorms that caused flooding in 2006 and 2009.
Read more at: https://phys.org/news/2017-09-decade-fema.html#jCp
