HYDROLOGICAL STUDIES OF SELECTED WADIS, ASWAN GOVERNORATE, EGYPT

Ibrahem, Sawsan M.; Morad, Nahla A.; Youssef, Nemaat A.

doi:10.21608/ejdr.2025.386033.1209

HYDROLOGICAL STUDIES OF SELECTED WADIS, ASWAN GOVERNORATE, EGYPT

Document Type : Original Article

Authors

¹ Department of Hydrology, Desert Research Center, Cairo, Egypt

² Nahla A. Morad Department of Hydrology, Desert Research Center, Cairo, Egypt

³ Department of Geology, Desert Research Center, Cairo, Egypt

10.21608/ejdr.2025.386033.1209

Abstract

Two storms, (November 2021 and August 2024) caused great damage in Aswan City, were selected to investigate the relation between rainfall and runoff. Four Wadis were selected: Abu Aggag, El Heta, Kimb and Umm Boirat. The morphometric analysis revealed that these Wadis have elongated shapes, long time of concentration, which means they can effectively recharge groundwater. During the rainfall event in November 2021, which recorded 18.78 mm of rain over 5 hours, Wadi Abu Aggag received peak flow rates of 119.8 m³ s^-1 and a total runoff volume of 3.2 million m³. The unexpected storm of August 2024, with rainfall depth of 69.72 mm and duration of 46 hours produced a huge amount of runoff water 15.6 million m³, with maximum flow (515.8 m³ s^-1) in Wadi Abu Aggag. This storm is considered as one of the phenomena of climate change in Egypt. The study recommended the construction of detention dams in the up-streams of Wadis El Heta, Kimb and Umm Boirat to delay water flow and enable gradual infiltrate to the groundwater. In addition, constructing a storage dam in the outlet of Wadi Abu Aggag to protect the urban areas from the occasional risk of flash floods and replenishment of the shallow aquifer in the area.

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