![]() identified clear regional patterns of changes in observed river flood discharges in the past five decades in Europe, with increases in northwestern Europe and decreases in eastern Europe and in medium and large catchments of southern Europe, which are manifestations of a changing climate. The past three decades were among the most flood-rich periods in the past 500 years in Europe, and this period differed from other flood-rich periods in terms of its extent, air temperatures, and flood seasonality. Nowadays, the occurrence of floods is increasing worldwide as a result of extreme rainfall, which is anticipated to occur more frequently as a consequence of the changing climate. In addition, results showed that the effects of climate change will raise the total damage from floods by 20.26%.įloods have been recognized as the most common and damaging natural disaster in many parts of the world. For the case study, the results show that the highest proportion of the total damage in each repetition interval (approximately 90–92%) is expected to occur in buildings. ![]() It calculates the economic loss related to different land-use features based on the simulated flood parameter obtained from the hydraulic model from 100- to 1000-year return periods. The flood damage model is formulated based on stage–damage relationships between different flood depths and land-use categories. A flood loss estimate included buildings and other infrastructure that are major exposures in flood-prone areas. To visualize the flood extent, velocity, depth, and their impact, the results of modelling are illustrated in the form of flood inundation maps produced in GIS. Hazard variables such as flood depth, flood extent, and flood velocity were computed for the current and future climatic scenarios using the hydraulic model for flood damage assessment. In this paper, a flood damage estimation method was proposed for the assessment of flood risk in the Drammen River basin by using a hydraulic model, GIS, and a flood loss estimation model. ![]() In order to minimize the probability and magnitude of expected economic losses and compensation costs, it is essential that flood risk managers are properly informed about potential damage related to hazard features and exposure. Their impact is expected to increase in the near future due to socio-economic development and climate change. Floods are frequent natural hazards, triggering significant negative consequences for the economy every year.
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