1. Assistant Professor, Dept. of Irrigation and Hydraulics Engineering, Faculty of Engineering, Tanta Univ., Tanta 31527, Egypt (corresponding author).
2. Director, Brace Centre for Water Resources Management, 817 Sherbrooke St. West, Macdonald Engineering Bldg., Room 492, Montreal, QC, Canada H3A 0C3; Professor, Endowed Brace Chair in Civil Engineering, Dept. of Civil Engineering and Applied Mechanics, McGill Univ., Montreal, QC, Canada H3A 0C3.