1. Geology Department, Faculty of Science, Port Said University, Port Said 42522, Egypt
2. Research Institute for Groundwater, National Water Research Centre, Cairo 13621, Egypt
3. Boone Pickens School of Geology, Oklahoma State University, Stillwater, OK 74078, USA
4. Geology Department, Faculty of Science, Suez Canal University, Ismailia 41522, Egypt
5. Water Resources Research Center, Disaster Prevention Research Institute, Kyoto University, Kyoto 611-0011, Japan