Integrated rainfall–runoff and flood inundation modeling for flash flood risk assessment under data scarcity in arid regions: Wadi Fatimah basin case study, Saudi Arabia

Elfeki, Amro; Masoud, Milad; Niyazi, Burhan

doi:10.1007/s11069-016-2559-7

Cited by 60 publications

(20 citation statements)

References 20 publications

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“…In years like 2010 and 2013, which were below the historical average and characterised by the frequent occurrence of hot dry periods, few events with superficial runoff were seen, as the occurrence of these hot dry periods reduces the level of antecedent moisture in the soil and increases the formation of cracks (a characteristic of vertic soils), as reported by Santos et al (2016). Accordingly, the determining factor in the process of surface runoff in the study area has been the pattern of rainfall events and the antecedent moisture status of the soil, as also argued by other researchers (MORIN, et al, 2006;FANG et al 2012).…”

Section: Resultssupporting

confidence: 65%

“…The hydrological processes in these regions are difficult to observe, being little understood; data is generally limited (ELFEKI et al, 2017;HRACHOWITZ, 2011), with less than 20% of all published articles on tropical forests covering seasonally dry tropical forests (SDTF) (PINHEIRO et al, 2013;YUAN et al, 2014).…”

Section: Introductionmentioning

confidence: 99%

“…Watercourses are mostly ephemeral or intermittent (OSBORN;HICKOK, 1968;SANTOS et al, 2016), showing high peaks in discharge, with runoff only during the rainy season (MEDEIROS et al, 2014). These factors contribute to the high spatial and temporal heterogeneity of the recharge and discharge mechanisms throughout the river basin, which in turn, represent a great challenge to the prediction of hydrological processes at the watershed scale (FANG et al, 2012;ROUILLARD et al, 2015). Such characteristics are aggravated by the high potential evapotranspiration, a result of the highly intense solar energy and high temperatures.…”

Section: Introductionmentioning

confidence: 99%

“…Os processos hidrológicos nessas regiões são difíceis de serem observados, sendo pouco entendidos; geralmente, os dados são limitados (ELFEKI et al, 2017;HRACHOWITZ, 2011). No entanto, menos de 20% de todos os artigos publicados sobre as florestas tropicas abordam as florestas tropicais sazonalmente secas (FTSS), (PINHEIRO et al, 2013;YUAN et al 2014).…”

Section: Introductionunclassified

“…Os cursos d'água em sua maioria são efêmeros ou intermitentes (OSBORN;HICKOK, 1968;SANTOS et al, 2016), apresentando picos de descargas elevados e escoamento somente durante a estação chuvosa (MEDEIROS et al, 2014). Esses fatores contribuem para a elevada heterogeneidade espaço temporal dos mecanismos de recarga-descarga ao longo da bacia hidrográfica; os quais, por sua vez, representam um grande desafio na predição dos processos hidrológicos em escala de microbacias (FANG et al, 2012;ROUILLARD et al, 2015). Tais características são agravadas pela elevada evapotranspiração potencial decorrente das altas intensidades de energia solar e elevadas temperaturas.…”

Section: Introductionunclassified

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Plant cover and hydrological response in a seasonally dry tropical forest (SDTF)

Andrade

Costa²,

Santos³

et al. 2017

AGRO@MBIENTE ON-LINE

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Abstract:The scarcity of information on the processes of rainfall-flow limits understanding of the hydrology of dry regions of the world. In order to minimise the problem, this study was developed to investigate the influence of the characteristics of rainfall events and plant cover on the effective precipitation (Pe) in a seasonally dry tropical forest (SDTF) in the Northeast of Brazil. The study was carried out in two paired watersheds, one with SDTF under regeneration for 35 years (CR35) and the other under thinned SDTF for 5 years (TC). A historical series of five years (2009)(2010)(2011)(2012)(2013) was analysed, with a total of 203 rainfall events, where only those rainfall events that generated a Pe > 1.0 mm were considered. CR35 had a greater number of Pe events (47) than TC (35). Rainfall depth and intensity were the factors that best explained the effective precipitation under both types of vegetation cover. The influence of herbaceous vegetation on the reduction of surface runoff was demonstrated by the smaller runoff depth and the greater potential for soil water storage in the watershed under thinned Caatinga. This fact leads to the conclusion that the technique of thinning is suitable management for Caatinga vegetation, and is capable of promoting the retention of soil water. Resumo: A escassez de informações sobre os processos chuva-deflúvio é uma limitação no entendimento da hidrologia das regiões secas do globo terrestre. Buscando minimizar esta problemática, desenvolveuse este estudo objetivando investigar as influências das características dos eventos pluviométricos e da cobertura vegetal na precipitação efetiva (Pe) em floresta tropical sazonalmente seca (FTSS), no nordeste do Brasil. O estudo foi realizado em duas microbacias emparelhadas, uma com FTSS em regeneração há 35 anos (CR35) e outra com FTSS raleada há 5 anos (CR). Foi analisada uma série histórica de cinco anos (2009)(2010)(2011)(2012)(2013), com um total de 203 eventos pluviométricos, sendo considerados somente os eventos pluviométricos que geraram Pe > 1,0 mm. A CR35 apresentou um maior número de eventos (47) de Pe do que a CR (35). A altura pluviométrica e as intensidades foram os fatores que melhor explicaram a precipitação efetiva em ambas as coberturas vegetais. A influência da vegetação herbácea na redução do escoamento superficial foi evidenciada pelas menores lâminas escoadas e pelo maior potencial de armazenamento de água no solo na microbacia com a Caatinga raleada. Tal fato permite concluir que a técnica de raleamento representa um manejo apropriado para a vegetação da Caatinga, sendo capaz de promover a retenção de água no solo.Palavras-chave: Chuva-deflúvio. Uso da terra. Estrato herbáceo. Semiárido.Revista Agro@mbiente On-line, v. 11, n. 4, p. 258-268, outubro-dezembro, 2017259 Plant cover and hydrological response in a seasonally dry tropical forest (SDTF)

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Section: Resultssupporting

confidence: 65%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionunclassified

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Plant cover and hydrological response in a seasonally dry tropical forest (SDTF)

Andrade

Costa²,

Santos³

et al. 2017

AGRO@MBIENTE ON-LINE

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Anthropogenic effects on flood hazards in a hyper‐arid watershed: The 2015 Atacama floods

Contreras,

Nash,

Escauriaza

2024

Earth Surf Processes Landf

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An unprecedented precipitation event in the hyper‐arid Atacama Desert of Northern Chile occurred in March 2015. Geomorphic alterations to the river channel and the coastal zone, coupled with the exceptional magnitude of the rainfall, caused catastrophic damage and loss of life. On the coast of the El Salado watershed, legacy mine tailings infilled the watershed‐ocean connection, while the river channel was altered both by tailings and urbanization. The consequences of this event resulted from the coupling of anthropogenic geomorphic changes with an unusual climate event. Lack of field data, complex geomorphology and sediment loads influenced by human activity make analysing floods in these regions especially challenging. The objective of this work is to improve our understanding of the factors that control flood hazards by using numerical simulations to reconstruct the 2015 flood in El Salado. We carry out unsteady two‐dimensional simulations fully coupled with the sediment concentration to identify the influence of tailing deposits, considering high‐resolution data of the pre‐ and post‐2015 flood topography. The results highlight the importance of specific event‐based studies, using models that can help designing better strategies for climate change adaptation and risk mitigation, while providing information for risk reduction and channel restoration.

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Two Dimensional Flood Inundation Modelling in Urban Areas Using WMS, HEC-RAS and GIS (Case Study in Jeddah City, Saudi Arabia)

Marko

Elfeki

Al-Amri

et al. 2018

Advances in Science, Technology &Amp; Innovation

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Integrated rainfall–runoff and flood inundation modeling for flash flood risk assessment under data scarcity in arid regions: Wadi Fatimah basin case study, Saudi Arabia

Cited by 60 publications

References 20 publications

Plant cover and hydrological response in a seasonally dry tropical forest (SDTF)

Plant cover and hydrological response in a seasonally dry tropical forest (SDTF)

Anthropogenic effects on flood hazards in a hyper‐arid watershed: The 2015 Atacama floods

Two Dimensional Flood Inundation Modelling in Urban Areas Using WMS, HEC-RAS and GIS (Case Study in Jeddah City, Saudi Arabia)

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