Dr.Salam Hussein Ewaid:Technical Institute of Shatra, Southern Technical University, Basra 61001, Iraq .
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Dr.Salwan Ali Abed:College of Science, University of Al-Qadisiyah, P.O. Box.1895, Diwaniya 58001, Iraq
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Dr.Nadhir Al-Ansari:Department of Civil, Environmental and Natural Resources Engineering, Lulea University of Technology, 97187 Lulea , Sweden.
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Riyadh M. Salih:National Center For Water Resources Management,Ministry of Water Resources ,Baghdad,Iraq.
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