Flashfloodcreates a rushofmovingwaterthatcansweep a grownmanofficefeet, a carofftheroadandevenyourentirehomeoffitsfoundation.
Whenthegroundbecomessosaturatedthatwatercannolongerseepintothesoil, itbeginstorunoffquicklyintoriversandstreams, andthiscauses a riseinwaterin a flash.
Denselypopulatedareashaveanextremelyhighriskofflashflooding, withtheadditionalconcreteandlessgrassyareasforthewatertosoakintothesoil, andtheycanseeflashfloodingveryquicklyin a mountainousterrain.