Sanja Perica, Ph.D. Chief, Hydrometeorological Design Studies Center
Office of Water Prediction, NWS, NOAA, W/OWP 1325 East-West Highway, Silver Spring, MD 20910
I remember discussing the hurricane rainfall and flood frequency issues just about a year ago when Hurricane Harvey nearly drowned Houston. Too much water in too short time – water as rainfall, water as storm surge, the reduced capacity of gravity drainage flow because of high sea level, etc. Or water for an extended period of time. And one should not be surprised if the scenario becomes a recurring problem – in years to come in all storm/hurricane prone countries.
If one goes into some gov websites, such as: https://msc.fema.gov/, https://www.usgs.gov/ and https://www.fhwa.dot.gov/ one would find many assisting literature/advices on storm, flood zoning, frequency, vulnerability, etc. But somehow there remains a gap between the scientific understanding and caution, and the actual implementation of housing and other civil engineering projects. If such gap exists what are the reasons? Perhaps one may look into different factors like: