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RUNOFF ESTIMATION UTILIZING HYDROLOGICAL MODELING WITH RS AND GIS TECHNIQUES FOR WADI GHOWEIBA COASTAL ZONE ON THE GULF OF SUEZ, EGYPT
Oral Presentation
Volume Title: 3rd International Conference on Civil Engineering: Development & Sustainability
Authors
1Geology Department, Faculty of Science, Assiut University, Assiut71516, Egypt
2Civil Engineering Department, Faculty of Engineering, Thamar University, Dhamar, Yemen. Civil Engineering Department, Faculty of Engineering, Assiut University, Assiut, Egypt
3Civil Engineering Department, Faculty of Engineering, Assiut University, Assiut, Egypt
Abstract
The coastal zone of Wadi Ghoweiba on the Gulf of Suez is subjected to infrequent heavy storm events causing flash floods. These floods may have an impact on the new development industrial projects area and El-Sokhna Harbor. This area is considered one of the most important areas in Egypt. It is located downstream Wadi Ghoweiba watershed, which is one of the largest in the Eastern Region (2846.4 km2).
This study aims to estimate the runoff and peak discharge (flood) volumes using RS and GIS techniques. The NRCS-CN method was utilized with the help of WMS and HEC-HMS models for developing the rainfall-runoff model of Wadi Ghoweiba watershed. The Annual Maximum Daily Rainfall (AMDR) data was collected for the past period from the available RS satellite-based datasets of PERSIANN-CDR product. The watershed was divided into 11 sub-basins (semi-distributed model). The results show that the total estimated extreme runoff volumes over the watershed were about 19.73 and 36.16 Million Cubic Meter (MCM) at 50 and 100 return periods, respectively. The estimated peak floods at the main outlet of the watershed are approximately 598.1 and 1153.5 m3/s. This indicates that there are heavy storm events affecting the study area of Wadi Ghoweiba coastal zone. The infrastructures located at this area are at risk of flash flood events. Thus, water resources management, rainwater harvesting, groundwater artificial recharge, and constructing small dams at the outlets of each sub-basin should be adopted to protect the coastal zone of Wadi Ghoweiba on the Gulf of Suez.
This study aims to estimate the runoff and peak discharge (flood) volumes using RS and GIS techniques. The NRCS-CN method was utilized with the help of WMS and HEC-HMS models for developing the rainfall-runoff model of Wadi Ghoweiba watershed. The Annual Maximum Daily Rainfall (AMDR) data was collected for the past period from the available RS satellite-based datasets of PERSIANN-CDR product. The watershed was divided into 11 sub-basins (semi-distributed model). The results show that the total estimated extreme runoff volumes over the watershed were about 19.73 and 36.16 Million Cubic Meter (MCM) at 50 and 100 return periods, respectively. The estimated peak floods at the main outlet of the watershed are approximately 598.1 and 1153.5 m3/s. This indicates that there are heavy storm events affecting the study area of Wadi Ghoweiba coastal zone. The infrastructures located at this area are at risk of flash flood events. Thus, water resources management, rainwater harvesting, groundwater artificial recharge, and constructing small dams at the outlets of each sub-basin should be adopted to protect the coastal zone of Wadi Ghoweiba on the Gulf of Suez.
Keywords
Flash flood; Rainfall; PERSIANN-CDR; Runoff; Hydrology; coastal zone; Gulf of Suez; Wadi Ghoweiba; Egypt
Subjects