1. M.Sc. Student, Dept. of Water Engineering, Faculty of Agriculture, Univ. of Zanjan, Zanjan 45371-38791, Iran.
2. Assistant Professor, Dept. of Water Engineering, Faculty of Agriculture, Univ. of Zanjan, Zanjan 45371-38791, Iran (corresponding author).
3. Assistant Professor, Dept. of Water Science Engineering, Bu-Ali Sina Univ., Hamedan 65178-38695, Iran.