The main objective of this study is to evaluate the potential impact of Grand Ethiopian Renaissance Dam (GERD) and pumping scenarios on groundwater level by a three-dimensional groundwater model of the Nile Delta using MODFLOW software. The Nile Delta has highly intensive irrigation canal networks that share yearly about 35.5 km3 of water. In this study, an integrated three-dimensional groundwater model is built considering the actual condition of the irrigation canals and their recharges of the Nile Delta aquifer. The model was calibrated for estimating the vertical and hydraulic conductivity. The model was run for three scenarios: (1) reduction of water depth in canals, (2) increasing pumping discharge from the aquifer and (3) combination between the first and second scenarios. Results reveal that the effect of increasing the pumping discharge on groundwater level in the Nile Delta is more significant than decreasing the water depth of the canals network due to the fact of the existence of the upper clay layer which reduces the amount of water penetrating and reaching the groundwater in the aquifer. The last scenario presents the worst case as the average drawdown reached 1.26 m, 1.7 m and 1.35 m in the western, central and eastern parts of the Nile Delta respectively. The study results should be taken in account for studying the saltwater intrusion and climate change impacts on the Nile Delta region.
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March 31 2017
Evaluation of the potential impact of Grand Ethiopian Renaissance Dam and pumping scenarios on groundwater level in the Nile Delta aquifer Available to Purchase
Asaad M. Armanuos;
1Egypt-Japan University of Science and Technology, Alexandria, Egypt Tanta University and Tokyo Institute of Technology, Tokyo, Japan
E-mail: [email protected]; [email protected]
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Mona G. Ibrahim;
Mona G. Ibrahim
2Egypt-Japan University of Science and Technology, Alexandria, Egypt and Environmental Health Department, High Institute of Public Health, Alexandria University, Alexandria, Egypt
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Wael Elham Mahmod;
Wael Elham Mahmod
3Egypt-Japan University of Science and Technology, Alexandria, Egypt and Civil Engineering Department, Faculty of Engineering, Assiut University Assiut, Egypt
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Abdelazim Negm;
Abdelazim Negm
4Faculty of Engineering, Zagazig University, Zagazig, Egypt
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C. Yoshimura;
C. Yoshimura
5Department of Civil Engineering, Tokyo Institute of Technology, 2-12-1Oookayama, Meguro, Tokyo 152-0033, Japan
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Jiro Takemura;
Jiro Takemura
6Department of Civil Engineering, Tokyo Institute of Technology, 2-12-1 Oookayama, Meguro, Tokyo 152-8552, Japan
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Bakenaz A. Zidan
Bakenaz A. Zidan
7Faculty of Engineering, Tanta University, Tanta, Egypt
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Water Supply (2017) 17 (5): 1356–1367.
Article history
Received:
October 30 2016
Accepted:
March 06 2017
Citation
Asaad M. Armanuos, Mona G. Ibrahim, Wael Elham Mahmod, Abdelazim Negm, C. Yoshimura, Jiro Takemura, Bakenaz A. Zidan; Evaluation of the potential impact of Grand Ethiopian Renaissance Dam and pumping scenarios on groundwater level in the Nile Delta aquifer. Water Supply 1 October 2017; 17 (5): 1356–1367. doi: https://doi.org/10.2166/ws.2017.037
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