Urban Flood 3 : Pavement which causes rapid runoff (rain can't soak into the ground so it runs downhill) and poor drainage can lead to flooded roadways and underpasses and even become deadly
National Weather Service NWS, Eastern Region Headquarters, A Guide To Developing A Severe Weather Emergency Plan For Schools (For Eastern Region Bohemia, NY), Appendix B: Glossary of Weather Terms (Flood), Baltimore-Washington Forecast Office, USA 2015. http://www.erh.noaa.gov/lwx/swep/swep.pdf, (ND Emr/ Flood - Amer) {952}