1. Professor of Civil Engineering, Dept. of Civil and Environmental Engineering, and Enviro-Hydroinformatic Center of Excellence, Iran Univ. of Science and Technology (IUST), Tehran, Iran 16846 (corresponding author).
2. Graduated Student of Water Engineering, Iran Univ. of Science and Technology (IUST), Tehran, Iran.
3. Distinguished Professor, Dept. of Civil and Environmental Engineering and Hydrology Program, Univ. of California, Davis, CA.