1. Center for Applied Research on the Environment and Sustainability, American Univ. in Cairo, AUC Avenue, P.O. Box 74, New Cairo 11835, Egypt; Environmentalist, B11 Antoniades Compound, P.O. 2148, St. Canal El-Mahmodeya, Smouha, Alexandria, Egypt. ORCID: .
2. Center for Applied Research on the Environment and Sustainability, American Univ. in Cairo, Cairo, Egypt; Dept. of Engineering Hydrology, RWTH Aachen Univ., Aachen, Germany; Professor, Dept. of Engineering Hydrology, Mies-van-der-Rohe-Strasse 17, 52074 Aachen, Germany (corresponding author). ORCID: .
3. Dept. of Statistics at Faculty of Economics and Political Science, Cairo Univ., Cairo, Egypt; Professor, 22 Game El Dawal el Arabia, Mohandseen, Giza 12411, Egypt.