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Document Type |
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Article In Journal |
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Document Title |
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The possible impact of the prevailing physiographic features of selected catchments upon their hydrological characteristics, Egypt (Comparative study). التأثير المحتمل للسمات الفيزيوجرافية السائدة على الخصائص الهيدرولوجية لبعض الأحواض المختارة - مصر (دراسة مقارنة) |
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Subject |
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Water Resources Hydrology |
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Document Language |
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English |
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Abstract |
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Physiographic features of the drainage basin are important controlling factors on the hydrologic response behavior and widely used in hydrologic studies and catchment modeling. Flash flood is an indicator and final result which depends on the physiographic features. Accordingly ten different catchments areas were chosen in Egypt to cover different climatic, topographic and geomorphologic conditions. These catchments are Wadi Al Ramla and Wadi Madwar represent for north western coastal (Mediterranean Sea Coast), Wadi Al Assuity and Wadi Abadi represent the western side of the eastern Desert (Nile River), Wadi Al Hawashyia and Wadi Dara represent the eastern side of the eastern Desert (Red Sea Coast), Wadi Al Arish represent Sinai Peninsula (Mediterranean Sea) Wadi Watier represent Sinai Peninsula (Gulf of Aqbah) ¬while both Wadi Sudr and Sidri represent Sinai Peninsula (Gulf of Suez). Northwestern coastal zone area characterized by low to mild topography and semi-arid climate, Eastern Desert characterized by mild to high topography and hyper-arid climate, while the Sinai Peninsula characterized by high topography and arid to semi-arid region. Forty morphometric parameters and their interrelationships were measured in the present study depending on ASTER data of digital elevation model (DEM) with 30 m resolution, topographic maps (1:50,000), geologic maps (1:250,000). Some of these parameters are applicable to arid and semiarid regions while others not. Flash flood hazards were analyzed based on nine morphometric parameters which have an effect on hydrologic behavior of the study basins. These parameters have a direct influence on flooding prone area, by influence on time of concentration. The flash flood hazard of study basins were identified and classified into three groups (High, medium and low hazard degree). The present work proved that the physiographic features contribute to the possibility a flash flood will occur in any particular drainage area. This study aimed to investigate the possible impact of the prevailing physiographic features of selected catchments upon their hydrological response using basin morphometric parameters. Moreover, it provides details on the flash flood prone area depending on the physiographic features and the mitigation measures. This study also helps to plan rainwater harvesting and watershed management in the flash flood alert zones especially in un-gauged basins. |
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ISSN |
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1991-8178 |
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Journal Name |
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Australian Journal of Basic and Applied Sciences |
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Volume |
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7 |
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Issue Number |
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14 |
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Publishing Year |
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1435 AH
2013 AD |
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Article Type |
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Article |
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Added Date |
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Sunday, February 23, 2014 |
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Researchers
| ميلاد حليم زكي مسعود | Masoud, Milad Halim Zaki | Investigator | Doctorate | mhmasoud@kau.edu.sa |
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