Introduction:The establishment and emergence of a city, more than anything else, depends principally on the natural environment and geographical location because the natural effects and phenomena have strong impacts on localization, distribution, influence, physical and morphological development of urban areas. Some of the natural phenomena are plateaus, mountains, craters, valleys, plains and beaches, alluvial fans, slopes, rivers, seas, lakes, and etc. (Zomorrodian, 1995: 8).