ater resources are increasingly a constraint on economic and social development in Egypt. Coping with the water scarcity in the North Western Coastal zone Basins (NWCB) requires good management for the flash floods. This requires an accurate estimation for the hazard degrees and flood risk. Multi Criteria Analysis (MCA) describes any structured approach used to determine overall preferences among alternative options, where the options accomplish certain or several objectives. The maximizing of water use in arid zones, like NWCB, is a highly important issue due to the damage, danger and other hazards associated to it to human life, properties, and environment. MCA techniques were tested and evaluated for the purpose of flash flood risk assessment, hydromorphological parameters for sample catchments in NWCB, were used in this analysis. Drainage network and watershed boundaries of NWCB shape file was created using TOPAZ (Topographic Parameterization) technique from the 90 m Digital Elevation Model (DEMs). These data are used in Watershed Modeling System (WMS) package to automatically delineate basin boundaries and define stream networks. Thirty four basins in NWCB were delineated for the study of the risk assessment of flash floods. Cluster analysis, depending on 10 estimated hydro-morphological parameters, classifies the NWCB into three groups. Ten chosen hydro-morphological parameters have their direct effect on flash flooding were used for estimating hazard scale depending on the MCA procedures. The proposed risk scale assumed category three for the high Weighted Standardized Risk Factor (WSRF) of five basins, while the category two (moderate WSRF) represents the middle sector of NWCB (19 basins). The class one represents 10 basins (low WSRF). Field measurements are highly recommended to verify the results of MCA procedure used in this paper.

中文翻译：

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应用多标准分析对埃及西北部沿海盆地进行山洪风险评估

资源日益成为埃及经济和社会发展的制约因素。应对西北沿海地区盆地 (NWCB) 的缺水需要对山洪暴发进行良好的管理。这需要准确估计危害程度和洪水风险。多标准分析 (MCA) 描述了用于确定替代选项之间总体偏好的任何结构化方法，其中选项实现某些或多个目标。在干旱地区，如 NWCB，最大限度地利用水资源是一个非常重要的问题，因为它会对人类生命、财产和环境造成损害、危险和其他危害。为了进行山洪风险评估，对 MCA 技术进行了测试和评估，该分析中使用了 NWCB 样本集水区的水文形态参数。NWCB 形状文件的排水网络和流域边界是使用 90 m 数字高程模型 (DEM) 的 TOPAZ（地形参数化）技术创建的。这些数据用于流域建模系统 (WMS) 包，以自动描绘流域边界并定义河流网络。划定了 NWCB 的 34 个流域，用于研究山洪暴发的风险评估。聚类分析根据 10 个估计的水文形态参数将 NWCB 分为三组。十个选定的水文形态参数对山洪暴发有直接影响，用于根据 MCA 程序估计灾害规模。建议的风险等级假定五个流域的高加权标准化风险因子 (WSRF) 属于第三类，而第二类（中等 WSRF）代表 NWCB 的中间部分（19 个盆地）。第一类代表 10 个盆地（低 WSRF）。强烈建议现场测量以验证本文中使用的 MCA 程序的结果。