Assessment and Zoning of Urban Lands Vulnerability Exposed to Flood Risk (Case Study: Regions 1, 5, and 10 of the Metropolis of Tabriz)

Document Type : Research Paper

Authors

1 PhD student in Urban Planning, Department of Architecture and Urban Planning, Tabriz International Branch, Islamic Azad University, Tabriz, Iran.

2 Associate Professor, Department of Architecture and Urban Planning, Tabriz Branch, Islamic Azad University, Tabriz, Iran.

3 Assistant Professor, Department of Architecture and Urban Planning, Tabriz Branch, Islamic Azad University, Tabriz, Iran.

Abstract

Flooding is one of the most critical and destructive threats to human societies, developing cities, and their residents, which, if not prepared in advance and properly planned, may cause irreparable loss of life and property to settlements, the strength of buildings, and urban facilities. Tabriz metropolis is not exempt from this threat due to its special geographical location and history of destructive floods. The crossing and confluence of the two rivers, Meydan Chayi and Mehran Chayi, and the heights of Aun Ebn Ali in areas 5, 1, and 10 of Tabriz city increase the risk of land vulnerability in these areas, making this area one of the most important flood-prone areas of Tabriz metropolis. The present study is of an applied type and the research method is descriptive-analytical. The aim of this research is to zone and investigate the vulnerability of different parts of urban lands to flooding and the factors affecting this risk in regions 5, 1 and 10 of Tabriz metropolis. The criteria and sub-criteria affecting the occurrence of floods were selected by experts and specialists, and then the MCDM multi-criteria decision-making model and the AHP analytic hierarchy process were used to zone the vulnerability of the lands of these areas and calculate the role of each of the aforementioned criteria and sub-criteria. Using the spatial analysis capabilities of Arc GIS software, the final layers of flood risk zoning and factors affecting flooding were prepared. By combining these layers, the final flood risk zoning map and identification of safe and vulnerable areas of the study area were determined. The research results show that 1 percent of the lands in the mentioned areas are in the very high risk zone, 17 percent are in the high risk zone, 30 percent are in the medium risk zone, 40 percent are in the low risk zone, and 3 percent are in the very low risk zone in terms of flooding.

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Geography and Territorial Spatial Arrangement
Volume 14, Issue 53
January 2025
Pages 151-178

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History

  • Receive Date: 28 May 2024
  • Revise Date: 11 November 2024
  • Accept Date: 25 November 2024

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