Assessment of Flood Hazard West of Sohag Governorate, Egypt | ||
| Sohag Journal of Sciences | ||
| Volume 6, Issue 1, January 2021, Pages 1-8 PDF (1.6 M) | ||
| Document Type: Regular Articles | ||
| DOI: 10.21608/sjsci.2021.233179 | ||
| Authors | ||
| Mostafa Redwan* 1; Marwa Abo Amra1; Ahmed A. Abdelmoneim1; Ahmed M. Youssef2 | ||
| 1Geology Dept. Faculty of Science, Sohag University, 82524 Sohag, Egypt | ||
| 2Geological Hazards Department, Applied Geology Sector, Saudi Geological Survey, P.O. Box 54141, Jeddah 21514, Saudi Arabia | ||
| Abstract | ||
| Although Egypt has limited rainfall events, flashfloods are responsible for huge losses of lives and infrastructure. In this study, the geomorphometric parameters of the hydrographic basins in the area west of Sohag city, Upper Egypt was carried out. Stream orders, lengths and numbers, bifurcation ratio, drainage frequency and density, circularity and elongation ratios for 16 drainage basins in the study area are quantified to develop a system for flood hazard assessment and mitigation using ESRI’s ArcGIS 10.1. The similarities in the calculated bifurcation ratios of the studied basins indicate that the genetic conditions of the stream orders are the same for each basin. Drainage densities show that these basins were developed under almost the same climatological and hydrogeological conditions. Most of the basins (62%) showed moderate hazard possibility, 25% exhibit low hazard possibilities and wadis El-Kawamil Bahri and El-Shaykh El-Aqra exposed high hazard possibilities. Due to the establishment of new urban areas, industrial zones, land reclamation and different types of projects in the study area, it is recommended to build small dams on appropriate locations for areas with high-moderate hazard probability to protect it and restore the excess water derived from any runoff and could be used for cultivation. | ||
| Keywords | ||
| Geomorphometric parameters – Flashfloods – Hazard Potential – Bifurcation ratios – Sohag; Egypt | ||
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