The ‘Deluge’ of 25 October 1822 in Genoa, Italy

Due to meteorological, geomorphological, and urban landscape features, the city of Genoa is frequently exposed to hydrological instability. Historical sources refer to floods since the early Middle Ages, while in the last few years the most impactful events with human losses took place in 2010, 2011 and 2014. Two centuries since its occurrence, using written reports, iconographical material and scientific reconstructions, the paper examines the flood of Genoa of 25 October 1822. In terms of rainfall data, surface effects and dynamics, this flood was one of the most destructive events of the city’s history.