1. Department of Civil Engineering, Faculty of Hydraulic structures, The Institute of Higher Education of Bonyan, Shahinshahr, Iran
2. Department of Civil Engineering, Urmia University, Urmia, Iran
3. Department of Statistics, Faculty of science, Golestan University, Gorgan, Iran
4. Research and product development, Bushehr, Iran
5. Hydraulic Engineering, Research Institute for Geo-Hydrological Protection, National Research Council (CNR), Perugia, Italy