Journal cover Journal topic
Natural Hazards and Earth System Sciences An interactive open-access journal of the European Geosciences Union
doi:10.5194/nhess-2016-311
© Author(s) 2016. This work is distributed
under the Creative Commons Attribution 3.0 License.
Research article
19 Oct 2016
Review status
This discussion paper has been under review for the journal Natural Hazards and Earth System Sciences (NHESS). A final paper in NHESS is not foreseen.
Estimation of flash flood using surface water model and GIS technique in Wadi El Azariq, East Sinai, Egypt
Maged M. El Osta1, Mohamed Sh. El Sabri2, and Milad H. Masoud2,3 1Geology Department, Faculty of Science, Damanhour University, Damanhour, Bahira, Egypt
2Hydrology Department, Desert Research Center, Matariya, Cairo, Egypt
3Water Research Centre – King Abdulaziz University – Jeddah – Saudi Arabia
Abstract. The study of flash flood hazard phenomenon and runoff potentialities are the major task of a hydrologists especially in arid and semi-arid regions. This paper presents a new approach to modeling flash floods in dryland catchments by the integration between physiographic features of the study basin, Geographic Information System (GIS) and Watershed Modelling System (WMS). Advanced Space borne Thermal Emission and Reflection Radiometer (ASTER) data was used to prepare a digital elevation model (DEM) with 30 m resolution and Geographical Information System (GIS) was used to evaluate the linear, areal and relief characteristics of Wadi El Azariq basin, East Sinai, Egypt. The qualitative and quantitative analysis of thirty eight morphometric parameters were estimated and interlinked to produce nine effective parameters for evaluation of the flash flood hazard in the study area. As a result of the sparse hydrologic information, the relation between rainfall and runoff was calculated depending on the morphometric information, GIS techniques, Watershed Modeling System (WMS) and Hydrologic Engineering Center-Hydrologic Modeling System software (HEC HMS). Based on the nine effective morphometric parameters that have a direct effect on flood prone area and control the hydrologic behavior of the basin, flash flood hazard of Wadi El Azariq sub-basins were identified and classified into two groups (High and low hazard degrees). Hydrographs for Wadi El Azariq basin were constructed with different return periods of maximum daily rain fall. The calculated volume of the total surface runoff ranges from 4.1 × 106 m3 to 13.8 × 106 m3 at return periods of 5 years and 100 year respectively based on the maximum daily rainfall events. This study draws specifics about the flash flood prone areas, planning rainwater harvesting and flood management approaches of Wadi El Azariq basin.

Citation: El Osta, M. M., El Sabri, M. Sh., and Masoud, M. H.: Estimation of flash flood using surface water model and GIS technique in Wadi El Azariq, East Sinai, Egypt, Nat. Hazards Earth Syst. Sci. Discuss., doi:10.5194/nhess-2016-311, 2016.
Maged M. El Osta et al.
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My paper Research highlights are as follows: (1) Estimation of flash flood using hydrologic model and GIS technique in wadi El Azareq. (2) Flash flood hazard evaluation for ungagged subbasins based on the hydrological characteristics. (3) The integration analysis between morphometric parameters and GIS techniques. (4) Watershed Modelling System (WMS) is applied to generate the hydrograph of subbasins. (5) Areas of inundation were calculated during return period of 10 years.
My paper Research highlights are as follows: (1) Estimation of flash flood using hydrologic...
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