Investigating the Flood Effect on Physical Development in Rahim Abad City, Using GIS

In this research, we tried to study the natural and geomorphological processes of the area Rahimabad city from Rudsar county, Using the field study and survey of city and area maps using GIS, The effect of urban flood and geomorphologic constraints existing in different directions of Rahim Abad development. The findings show that due to topographic conditions, proper slope and adequate coverage of scum and plowing in the city, The possibility of flood and waterlogging passages is very low, and in some parts of the northern part of the city, due to slopes, there is a possibility of watering. The city of Rahim Abad is limited to the highlands from the south, and the topographical factor in these directions as a natural phenomenon is considered as a factor in the lack of development of the city. On the other hand, from the west and northwest, there is a developmental restriction due to the Polrood River, On the northern side, when the altitude is minimized, the agricultural lands operating are limiting the city's development. Therefore, only the physical development path of the city is in the east and northeast direction near the Rahimabad road to Kalachai.