Flash Flood Events along the West Mediterranean Coasts: Inundations of Urbanized Areas Conditioned by Anthropic Impacts

Flash floods represent one of the natural hazards that causes greatest number victims in Mediterranean area. These processes occur by short and intense rainfall affecting limited areas a few square kilometers, with rapid hydrological responses. Among flood frequency increase last decades are effects urban expansion fluvial pertinence climatic change, namely interaction between anthropogenic landforms hydro-geomorphological dynamics. In this paper authors show comparison events very similar weather-hydrological characteristics ground occurred coastal three regions located at top triangle Ligurian Sea, Liguria, Tuscany Sardinia. With respect to meteorological-hydrological hazard, it should be noted analyzed during autumn, conditions storm system triggered cyclogenesis on Genoa Gulf or extra-tropical cyclone Cleopatra. The “flash floods” damage recorded inhabited is due vulnerability elements risk fluvio-coastal plains examined. There numerous forcings have influenced dynamics led an conditions.