1. Master’s Student, Dept. of Civil Engineering, Univ. of Qom, Qom 3716146611, Iran.
2. Assistant Professor, Dept. of Civil Engineering, Univ. of Qom, Qom 3716146611, Iran (corresponding author).
3. Hydrologist, Dept. of Civil Engineering, Clayton Monash Univ., Melbourne 3001, Australia; Australian Bureau of Meteorology, 700 Collins St., Docklands, Melbourne 3001, Australia.
4. Professor, Dept. of Geography, Univ. of California, Santa Barbara, CA 93016-4060.