Abstract. Delineating drainage networks is essential to predict surface water runoff, and consequently the flash flood hazards. Quantitative description of drainage basin and drainage network is confronted with problems related to the scale and resolution of the used topographic maps, and to the implemented systematic interpretation method. Integrated Geographic Information Systems (GIS), and remote sensing data overlaid on large-scale topographic maps, can efficiently be used to study the prevailed drainage network, and hence surface water potentiality. The developed integrated approach is applied for quantitative analysis of geomorphometeric parameters, and to delineate the watershed of Wadi Ghoweibba basin in Ain Sukhna area, western side of the Gulf of Suez, Egypt. Quantitative analysis of geomorphometeric parameters calculated for Wadi Ghoweibba basin is used to decipher the flash flood risk zones and to establish an effective hazard mitigation scheme.
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