Preprint Article Version 1 Preserved in Portico This version is not peer-reviewed

Assessment of the Exposure of Urban Areas the Pluvial Flood Risk Using the Method of Analytic Hierarchy Process

Version 1 : Received: 12 April 2023 / Approved: 13 April 2023 / Online: 13 April 2023 (02:45:09 CEST)

How to cite: Skonieczna, M.; Walczykiewicz, T. Assessment of the Exposure of Urban Areas the Pluvial Flood Risk Using the Method of Analytic Hierarchy Process. Preprints 2023, 2023040279. https://doi.org/10.20944/preprints202304.0279.v1 Skonieczna, M.; Walczykiewicz, T. Assessment of the Exposure of Urban Areas the Pluvial Flood Risk Using the Method of Analytic Hierarchy Process. Preprints 2023, 2023040279. https://doi.org/10.20944/preprints202304.0279.v1

Abstract

The report [1] shows that in many European cities the sewer system is older than 40 years, potentially reducing their ability to cope with more intense pluvial flooding [2] addition to climate change, urbanization is an important factor increasing the flooding risk, as it increases of impervious surfaces. Flash floods are particularly troublesome, causing not only the overloading of drainage systems [3], but also urban transport disruption, affecting human health, and contributing to pollution due to untreated sewage discharges [4]. Pluvial floods in urban areas are caused by short-duration precipitation, high intensity and on small scale. Such rainfall is difficult to predict and does not always apply to catchment areas. In Poland, heavy rainfall lasts relatively short, from a few minutes to a few, at most, several hours [5]. The method of the Analytic Hierarchy Process (AHP) was used to rank the importance of criteria characterizing exposure in urban areas. The ranking is based on expert judgements. The article focuses on exposure which is one of the components of risk. Geographical Information System (GIS) is integrated with Multicriteria Decision Analysis (MCDA) to evaluate exposure of urban area on pluvial floods.

Keywords

flood risk; urban areas; vulnerability; exposure; pluvial floods; Analytic Hierarchy Process

Subject

Environmental and Earth Sciences, Environmental Science

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