Flood Mapping and Damage Assessment Using the Integration of HEC-RAS and ARC-GIS Models with a Flood Damage Reduction Approach (Case Study: Jajrood River - Upstream of the Latian Dam)

Ojaghlou, Elahe; Akbarian, Mohammad

Flood Mapping and Damage Assessment Using the Integration of HEC-RAS and ARC-GIS Models with a Flood Damage Reduction Approach (Case Study: Jajrood River - Upstream of the Latian Dam)

Document Type : Original Article

Authors

Elahe Ojaghlou ^¶

Mohammad Akbarian ^¶

Civil Engineering Department, Ale-Taha Institute of Higher Education, Tehran, Iran.

Abstract

With the continuous increase in population and the subsequent growth of residential areas, flood mapping and management have become essential tasks. Identifying and highlighting areas at risk of flooding, as well as implementing structural and non-structural measures, are among the most important issues in flood management. The Jajrood River is one of the most important watersheds in Tehran Province. In this paper, the hydrological and water level data for floods with return periods of 200, 100, 50, 25, 10, and 5 years are determined using the HEC-RAS software model. Geographic Information System (GIS) is then used to create flood zoning maps. By matching damage charts to various points along the river based on the obtained water levels, critical areas in the region are identified. Subsequently, flood damage reduction strategies are proposed for these areas. In some engineering studies, predicting and simulating river behavior for different return periods is of great importance. Therefore, determining the dimensions of the riverbed and its boundaries is crucial for any flood management and prevention plan in the surrounding floodplain areas.

Keywords

Groundwater simulation

Intelligent model

Random Forest

Decision tree

Fuzzy inference system