Efficiency Evaluation of Surface Water Collection Infrastructure during Floods: Information Analysis and Zoning Management

• DOI: 10.53964/jia.2024002
• Publication Date: 2024-03-26T06:02:06Z
• Authors: Faraz Estelaji; Narjes Ghaderi; ; Mahsa Ghorbani; ; Alireza Naseri; ; Rahim Zahedi; ; Ali Asghar Pourezzat; ; Mansour Keshavarz...; ; Hossein Yousefi
• Keywords: Flood Mitigation; Return period

Objective: Flood events, occurring as natural and unexpected phenomena, have become increasingly prevalent in recent decades. Assessing the probability of flood risk creating zoning maps vulnerable areas, particularly urban regions, are crucial for mitigating damages managing such events. This research aims to determine flood-prone zones along Darakeh River, located Tehran, capital city Iran, by integrating hydraulic model HEC-RAS with Geographic Information System (GIS). Methods: After establishing physiographic characteristics watershed, including area, perimeter, elevation, slope, time concentration, influential factors on occurrences permeability, hydrological soil groups, runoff potential, curve number, land use, vegetation cover were identified. information, other data flow specifications boundary conditions, roughness coefficients, design discharge, was incorporated into model. The executed different return periods 2, 5, 10, 25, 50, 100 years. Subsequently, outputs transferred GIS obtain River aforementioned periods. Results: As observed, middle section Khoshke Channel, which has a lower gradient, floodplain exhibits wider extent. Furthermore, course river after passing through stretch Channel reduced floodplain's area increases up location western channel. Conclusion: It is concluded that areas slopes exhibited larger zones, highlighting necessity increased attention prevent significant during