Development of a methodology to evaluate the flood risk at the coastal zone

• Autor(a) principal: Raposeiro, P.
• Data de Publicação: 2010
• Outros Autores: Fortes, C. J. E. M., Reis, M. T., Ferreira, J.
• Tipo de documento: Artigo
• Idioma: eng
• Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
• Texto Completo: http://repositorio.lnec.pt:8080/jspui/handle/123456789/1002230
• topic: Geographic information systems; Numerical models; Coastal planning and management; Risk and vulnerability; Vale do lobo beach

This paper illustrates the methodology developed to evaluate the risk of flooding of a coastal area, as well as the application of such methodology to Vale do Lobo beach, situated in the Loulé Municipality, a Portuguese coastal area under significant touristic pressure. The methodology is based on four main steps: a) division of the study area into sub-areas with similar characteristics in terms of coastal defense; b) determining the probability of exceedance of pre-set thresholds of flood levels for each study area; c) establishment of qualitative factors related to the consequences of exceedance of pre-set thresholds of flood levels; d) combination of the above steps for expeditious assessment of flood risks. The determination of flood levels follows the methodology presented in [1] and [2], which is based on the transference of the Faro wave-buoy regime to the study area by using the SWAN model integrated in a geographic information system (GIS)