Enter your email address
Submit
Write your message
Volume 14, Issue 4 (Winter 2025)
Disaster Prev. Manag. Know. 2025, 14(4): 392-405 |
Back to browse issues page
Download citation:
BibTeX | RIS | EndNote | Medlars | ProCite | Reference Manager | RefWorks
Send citation to:
BibTeX | RIS | EndNote | Medlars | ProCite | Reference Manager | RefWorks
Send citation to:
Nasiri A, Salimi E, Delfan Azari M, Yazdi J, Shahsawandi M. Urban Flood Zoning Using an Integrated Hydrological-Hydraulic Watershed Modeling Approach, Case Study: Districts 21 and 22 of Tehran. Disaster Prev. Manag. Know. 2025; 14 (4) :392-405
URL: http://dpmk.ir/article-1-710-en.html
URL: http://dpmk.ir/article-1-710-en.html
1- Department of Health in Disasters, School of Health, Baqiyatallah University of Medical Sciences, Tehran, Iran. & Tehran Disaster Mitigation and Management Organization, Tehran, Iran.
2- Tehran Disaster Mitigation and Management Organization, Tehran, Iran.
3- Department of Water Resources Engineering, Faculty of Civil, Water and Environmental Engineering, Shahid Beheshti University, Tehran, Iran.
2- Tehran Disaster Mitigation and Management Organization, Tehran, Iran.
3- Department of Water Resources Engineering, Faculty of Civil, Water and Environmental Engineering, Shahid Beheshti University, Tehran, Iran.
Abstract: (1835 Views)
Flood zoning has extensive applications in flood management and is considered one of the fundamental and critical pieces of information in flood risk management. Flood zoning in urban areas is much more challenging than modeling in floodplain and river areas due to the two-dimensional nature of the flow and, on the other hand, the density of urban features such as buildings, streets, boulevards, and public pathways. In this study, flood zoning for districts 21 and 22 of Tehran was conducted under the current conditions, where the area is almost devoid of surface water collection channels, using a physically-based rainfall-runoff model and two-dimensional hydraulic routing which is the novelty aspect of the article. For this purpose, the HEC-HMS model was used to estimate the runoff from the mountains, and the MIKE model was used to simulate urban rainfall-runoff. According to the modeling results, the areas affected by a 50-year flood event were identified using an integrated modeling approach in districts 21 and 22, covering 8% of these areas. In these areas, the maximum flood depth is 11.8 meters in Vardavard river and the highest speed is 4.5 meters per second at the beginning of Hashemzadeh street (south of Kharrazi highway). The results indicate that in the event of extreme events such as a 50-year rainfall, a significant portion of the highways and main communication arteries of Tehran leading westward would be disrupted, and traffic would be impossible. Moreover, various land uses would fall within the flood zone, and due to the absence of a surface water network, waterlogging conditions throughout districts 21 and 22 of Tehran are predictable. Therefore, the development of a surface water collection network is one of the main priorities for reducing flood risk in these areas.
Type of Study: Research |
Subject:
Special
Received: 2024/08/18 | Accepted: 2024/11/5 | ePublished: 2025/02/28
Received: 2024/08/18 | Accepted: 2024/11/5 | ePublished: 2025/02/28
| Rights and permissions | |
 |
This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License. |
Copyright © 2025 The Author(s)" by "authors retain the copyright and full publishing rights"
This is an open access article distributed under the terms of the Creative Commons Attribution License (CC-By-NC), which permits use, distribution, and reproduction in any medium, provided the original work is properly cited and is not used for commercial purposes.
Contact Information
