Arid
DOI10.1016/j.jafrearsci.2018.02.004
Flood frequency analysis and generation of flood hazard indicator maps in a semi-arid environment, case of Ourika watershed (western High Atlas, Morocco)
El Fels, Abdelhafid El Alaoui1; Alaa, Noureddine2; Bachnou, Ali1; Rachidi, Said3
通讯作者El Fels, Abdelhafid El Alaoui
来源期刊JOURNAL OF AFRICAN EARTH SCIENCES
ISSN1464-343X
EISSN1879-1956
出版年2018
卷号141页码:94-106
英文摘要

The development of the statistical models and flood risk modeling approaches have seen remarkable improvements in their productivities. Their application in arid and semi-arid regions, particularly in developing countries, can be extremely useful for better assessment and planning of flood risk in order to reduce the catastrophic impacts of this phenomenon.


This study focuses on the Setti Fadma region (Ourika basin, Morocco) which is potentially threatened by floods and is subject to climatic and anthropogenic forcing. The study is based on two main axes: (i) the extreme flow frequency analysis, using 12 probability laws adjusted by Maximum Likelihood method and (ii) the generation of the flood risk indicator maps are based on the solution proposed by the Nays2DFlood solver of the Hydrodynamic model of two-dimensional Saint-Venant equations. The study is used as a spatial high-resolution digital model (Lidar) in order to get the nearest hydrological simulation of the reality.


The results showed that the GEV is the most appropriate law of the extreme flows estimation for different return periods. Taking into consideration the mapping of 100-year flood area, the study revealed that the fluvial overflows extent towards the banks of Ourika and consequently, affects some living areas, cultivated fields and the roads that connects the valley to the city of Marrakech. The aim of this study is to propose new technics of the flood risk management allowing a better planning of the flooded areas. (C) 2018 Elsevier Ltd. All rights reserved.


英文关键词Flood Semi-arid Frequency analysis Law Two-dimensional Risk
类型Article
语种英语
国家Morocco
收录类别SCI-E
WOS记录号WOS:000429512000009
WOS关键词LOG-LOGISTIC DISTRIBUTION ; HYDROLOGICAL MODEL ; RISK-ASSESSMENT ; ANNUAL MAXIMUM ; DISTRIBUTIONS ; DAMAGE ; STATISTICS ; MANAGEMENT ; PARAMETER ; MOMENTS
WOS类目Geosciences, Multidisciplinary
WOS研究方向Geology
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/210385
作者单位1.Fac Sci & Tech Marrakech, Lab Geosci & Environm, BP 549, Marrakech, Morocco;
2.Fac Sci & Tech Marrakech, Lab Appl Math & Comp Sci, BP 549, Marrakech, Morocco;
3.Hydraul Basin Agcy Tensift, BP 2388, Marrakech, Morocco
推荐引用方式
GB/T 7714
El Fels, Abdelhafid El Alaoui,Alaa, Noureddine,Bachnou, Ali,et al. Flood frequency analysis and generation of flood hazard indicator maps in a semi-arid environment, case of Ourika watershed (western High Atlas, Morocco)[J],2018,141:94-106.
APA El Fels, Abdelhafid El Alaoui,Alaa, Noureddine,Bachnou, Ali,&Rachidi, Said.(2018).Flood frequency analysis and generation of flood hazard indicator maps in a semi-arid environment, case of Ourika watershed (western High Atlas, Morocco).JOURNAL OF AFRICAN EARTH SCIENCES,141,94-106.
MLA El Fels, Abdelhafid El Alaoui,et al."Flood frequency analysis and generation of flood hazard indicator maps in a semi-arid environment, case of Ourika watershed (western High Atlas, Morocco)".JOURNAL OF AFRICAN EARTH SCIENCES 141(2018):94-106.
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