Application of two-dimensional hydraulic modelling in flood risk mapping. A case of the urban area of Zaio, Morocco

Naiji, Zakariae; Oujidi, Mostafa; Amarjouf, Najat; Rezqi, Halima

doi:10.1080/10106049.2019.1597389

Cited by 12 publications

(7 citation statements)

References 33 publications

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“…Hydrodynamic modeling requires an accurate representation of the topography of the river channel and neighboring floodplains to simulate the streamflow as realistically as possible [140]. Various numerical tools, such as one-dimensional (1D), two-dimensional (2D), or three-dimensional (3D) approaches, are available for river and floodplain modeling, each with distinct capabilities and data requirements [141][142][143][144]. HEC-RAS model was selected for the study area based on meteorological and spatial data availability.…”

Section: Hec-ras Analysismentioning

confidence: 99%

Flood Susceptibility Assessment through Statistical Models and HEC-RAS Analysis for Sustainable Management in Essaouira Province, Morocco

Khouz,

Trindade,

Santos

et al. 2023

Geosciences

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Floods are natural disasters that often impact communities living in low-lying areas in the northern and central parts of Morocco. In this study, our aim was to create a flood susceptibility map using three methods; the hierarchy process (AHP) frequency ratio model (FR) and the weights of evidence (WoE) model. We extensively examined the area identified by these approaches using a hydraulic analysis software called HEC-RAS (version 6.3.1). Our analysis focused on the Essaouira watersheds in Morocco, where we identified around 197 flood locations. Out of these, we randomly selected 70% for modeling purposes while the remaining 30% were used for validation. Ten factors that influence floods were considered, such as slope, elevation, proximity to rivers, drainage density, stream order, land use patterns, rainfall data, lithology (permeability level) index (TWI), and curvature. We obtained these factors from data sources. Finally, we generated a flood susceptibility map and evaluated its accuracy by calculating the area under the curve (AUC). The validation results confirmed that all three models were robust and effective with an AUC of 90. Moreover, the research uncovered a trend of vulnerability with the most susceptible area being in close proximity to the city of Essaouira along the Oued Ksob. A detailed analysis using HEC-RAS was conducted at this identified location, pinpointing the village of Diabat as highly exposed. These findings hold significance for flood management, empowering decision makers, scholars, and urban planners to make informed choices and implement strategies that can minimize the impact of floods in susceptible regions while minimizing potential damages.

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Section: Hec-ras Analysismentioning

confidence: 99%

Flood Susceptibility Assessment through Statistical Models and HEC-RAS Analysis for Sustainable Management in Essaouira Province, Morocco

Khouz,

Trindade,

Santos

et al. 2023

Geosciences

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“…Zaio, situated in the southern part of Nador province (figure 1), is characterized by an altitude of 190 meters above sea level and experiences an average annual rainfall of 330 mm [6]. The city is surrounded by the Kebdana Range to the north and the Sebra River to the south, forming a valley dominated by hills that act as a watershed for several small rivers known as Châaba.…”

Section: Study Areamentioning

confidence: 99%

Application of physically-based and experimentally calibrated method for flood hazard assessment: Case study of Zaio, Morocco

El Baida,

Boushaba,

Chourak

et al. 2023

E3S Web of Conf.

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This study aims to assess the urban flood hazard in Zaio, Morocco by utilizing a rainfall-runoff transformation and hydrodynamic modelling. We utilized a statistical adjustment and The Soil Conservation Service–Curve Number (SCS-CN) method to estimate the 100-year return period flood hydrograph, which itself served as input for the Iber numerical model. Flood hazard assessment for human adults was calculated using a physically-based and experimentally calibrated method, a method that takes into consideration all physical forces acting on a human body during a flood, i.e., drag and buoyancy, and thereby facilitate a more precise assessment of urban flood hazard.

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“…Covering a total area of 1985 Km2, the province of Berkane represents 2.2% of the region's total area. [3] https://doi.org/10.1051/e3sconf/202129801001 E3S Web of Conferences 298, 01001 (2021) ICCR 2020…”

Section: Geographic Contextmentioning

confidence: 99%

“…With this study, we try to present universal methods that could be applied to other similar cities at the local spatial scale. [3] 2 General Contexts…”

Section: Introductionmentioning

confidence: 99%

Flood risk modeling in the watershed of Charâa stream, Province of Berkane (North-Eastern Morocco)

Afif¹,

Oujidi²,

Amarjouf

et al. 2021

E3S Web Conf.

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The knowledge on floods in Morocco is sporadic and scattered between historical writings and natural events following each other in time and space. In this context, the identification of areas likely to be affected by floods is essential for better management of this risk. The present study aims to model the floods at the level of the two sides of the Charâa stream (the side of Berkane and Sidi Slimane Charâ). The methodology followed in this modeling consists of determining the geomorphology of the watershed and studying its hydrology. 2D hydraulic modeling by Iber software makes it possible to follow the Spatio-temporal evolution of the characteristics of a flood. In addition, it allows us to map the hazard. Furthermore, to assess vulnerability to flooding, we referred to land use (physical vulnerability) to study the behavior of runoff water in the face of socioeconomic issues such as buildings, facilities, and the road network. The results showed that: (1) - A predominance of high-intensity flood hazard in the floodplain; (2) - Land with medium and high vulnerability successively constitutes 46.50% and 31.10% of the total studied watershed area.

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Application of two-dimensional hydraulic modelling in flood risk mapping. A case of the urban area of Zaio, Morocco

Cited by 12 publications

References 33 publications

Flood Susceptibility Assessment through Statistical Models and HEC-RAS Analysis for Sustainable Management in Essaouira Province, Morocco

Flood Susceptibility Assessment through Statistical Models and HEC-RAS Analysis for Sustainable Management in Essaouira Province, Morocco

Application of physically-based and experimentally calibrated method for flood hazard assessment: Case study of Zaio, Morocco

Flood risk modeling in the watershed of Charâa stream, Province of Berkane (North-Eastern Morocco)

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