Crisis management of cities with emphasis on floods

A flood is an exceptionally intense water flow that can overflow the natural river bed and occupy the surrounding land. Floods can be the result of heavy rains, rapid melting of snow and ice, or destruction of dams. Whatever the reason for the existence of this process, when it enters urban areas, it causes damages and sometimes many casualties, because the city encroaches on natural hydrological spaces (channels and riverbeds) during its growth and development. Over the past few decades, new methods have been invented to deal with floods, and these methods are mostly preventive in nature and not curative. By implementing specific plans for the use of urban land, establishing regulations and laws, as well as educating people, the damages caused by floods can be reduced and minimized. Also, he avoided spending heavy and exorbitant expenses for the construction of flood control facilities, which are very capital intensive. In this regard, the present research, deals with the identification of the effect of natural factors (rainfall) and the creation of crises arising from it in urban planning. The results are paying attention to crisis management in urban planning in order to prevent floods and reduce rain damage. Expand the optimal use of rainwater in various dimensions.