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Open AccessArticle

Flood Risk Evaluation in Ungauged Coastal Areas: The Case Study of Ippocampo (Southern Italy)

1
Department of Agriculture and Forestry Sciences (DAFNE), Tuscia University Via San Camillo de Lellis, 01100 Viterbo, Italy
2
Department of Civil, Environmental, Building Engineering and Chemistry, Polytechnic University of Bari, Via E. Orabona, 4, 70125 Bari, Italy
3
Freelance—Via Nannarone, 11, 71121 Foggia, Italy
4
Department of European and Mediterranean Cultures, University of Basilicata, Via Lanera, 20, 75100 Matera, Italy
*
Author to whom correspondence should be addressed.
Water 2020, 12(5), 1466; https://doi.org/10.3390/w12051466
Received: 18 March 2020 / Revised: 16 May 2020 / Accepted: 18 May 2020 / Published: 21 May 2020
The growing concentration of population and the related increase in human activities in coastal areas require numerical simulations to analyze the effects of flooding events that might occur in susceptible coastal areas in order to determine effective coastal management practices and safety measures to safeguard the inhabited coastal areas. The reliability of the analysis is dependent on the correct evaluation of key inputs such as return period of flooding events, vulnerability of exposed assets, and other risk factors (e.g., spatial distribution of elements at risk, their economic value, etc.). This paper defines a methodology to assess the effects of flooding events associated with basin run-off and storm surge in coastal areas. The assessment aims at quantifying in economic terms (e.g., loss of assets) the risk of coastal areas subject to flooding events. The methodology proposed in this paper was implemented to determine the areas subject to inundation on a coastal area in Southern Italy prone to hydrogeological instability and coastal inundation. A two-dimensional hydraulic model was adopted to simulate storm surges generated by severe sea storms coupled with intense rainfalls in order to determine the areas subject to inundation in the low-land area along the Adriatic coast object of this study. In conclusion, the economic risk corresponding to four different flooding scenarios was assessed by correlating the exceedance probability of each flooding scenario with the potential economic losses that might be realized in the inundated areas. The results of the assessment can inform decision-makers responsible for the deployment of risk mitigation measures. View Full-Text
Keywords: flood risk; flooding area; hydraulic model; coastal inundation; hazard map; low-land area; vulnerability; exposure; ungauged basin flood risk; flooding area; hydraulic model; coastal inundation; hazard map; low-land area; vulnerability; exposure; ungauged basin
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Apollonio, C.; Bruno, M.F.; Iemmolo, G.; Molfetta, M.G.; Pellicani, R. Flood Risk Evaluation in Ungauged Coastal Areas: The Case Study of Ippocampo (Southern Italy). Water 2020, 12, 1466.

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