For more informationĭottori, F., Kalas, M., Salamon, P., Bianchi, A., Alfieri, L., and Feyen, L., 2017: An operational procedure for rapid flood risk assessment in Europe, Nat. The rapid impact assessment considers two scenarios, protected and unprotected (protected: exceeding 10 years return period or protection level unprotected: exceeding 10 years return period).įlood protection levels used within the different areas of interest are shown in the 'flood protection level' layer.ĭuring large-scale flood events, EFAS impact forecasts can be used to pre-task the acquisition of satellite images for a possible activation of the rapid mapping component of the Copernicus EMS. Considered exposure includes population, infrastructure and land cover. Impact assessment: the event-based flood inundation maps are combined with exposure information to assess regional impacts (shown on the “Rapid Impact Assessment” layer).The obtained event-based flood inundation map has a spatial resolution of 100 by 100 m and is shown on the “Rapid Flood Mapping” layer. Rapid flood mapping: for each EFAS river section identified in step 1, flood prone areas are delineated, using a catalogue of flood inundation maps.River grid cells where the protection levels are exceeded are selected for the following steps of the procedure. Medium-range flood forecast: every time a flood event is forecasted in EFAS, the magnitude of the forecasted peak discharge (based on the ECMWF-ENS EFAS ensemble forecast median for the full forecasting period) is compared against the EFAS flood protection levels. Publication Climate change, impacts and vulnerability in Europe 2012 This European Environment Agency (EEA) report presents information on past and projected climate change and related impacts in Europe, based on a range of indicators. In EFAS, the flood impact forecasts are based on three components: 1) medium-range flood forecasts, 2) event-based rapid flood mapping, and 3) impact assessment. Flood impact forecasts are especially important in the preparedness phase, to support the planning and allocation of rescue assets, and to get a first estimate of the forecasted flood event’s potential socio-economic consequences.
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