Flood in Münster (2021-03-29)

<br/> Activation date: 2021-03-29 <br/> Event type: Flood <br/> <br/> Activation reason: <br/> The CEMS Risk and Recovery Standard has been activated by the Federal Office of Civil Protection and Disaster Assistance (BBK) on behalf of Bezirksregierung M&uuml;nster, for a retrospective assessment of the maximum flood extent and flood depth registered during the event occurred at the Ems river (M&uuml;nster city, Germany) in February 2021, whose flood peak was observed on the 19th February 2021. The inundation was caused by a significant increase of temperatures to approximately 30 degrees that was registered since the 15th of February, resulting into a rapid snow melting process and into a consequent quick increase of the water level in local water bodies, so that numerous rivers around M&uuml;nster burst their banks, causing floods in the regions along the Ems river.A hydraulic modelling approach has been adopted to provide the temporal analysis of the occurred flood event (P06 product) in terms of maximum flood extent, maximum water depth, and flood temporal evolution estimated during the period 17th-22nd February 2021. The model has been calibrated by using three P04-Flood delineation products depicting the flood footprint extracted from Sentinel-1 acquisitions taken on the 19th (682.65 ha), 21st (355.72 ha) and 22nd (353.86 ha) of February 2021.The maximum flood extent retrieved from the hydraulic modelling is 1791.31 ha. The water depth range has been estimated between 0.25 and 2.5 m (0.40 m on average). <br/> <br/>