1. Water Research Center, King Abdulaziz University, Jeddah, Kingdom of Saudi Arabia
2. Department of Hydrology and Water Resources Management – Faculty of Meteorology, Environment & Arid Land Agriculture, King Abdulaziz University, Jeddah, Kingdom of Saudi Arabia
3. Glenn Department of Civil Engineering, Clemson University- Lowry Hall, Clemson, SC, USA
4. Hydrology Department-Desert Research Centre, Mataria, Egypt
5. Irrigation and hydraulics Department, Faculty of Engineering, Mansoura University, Egypt