Assessing Flood Risk in the Zard River Basin: A Multi-Criteria Analysis Using the Vikor Model

Rezaei Moghaddam, Mohammad Hossein; Rajabi, Masomeh; Mousavi, Seideh Masoumeh

doi:10.22111/jneh.2024.43735.1945

Assessing Flood Risk in the Zard River Basin: A Multi-Criteria Analysis Using the Vikor Model

Document Type : Research Article

Authors

¹ Professor of Geomorphology, Faculty of Planning and Environmental Sciences, University of Tabriz, Iran

² PhD student of Geomorphology, Faculty of Planning and Environmental Sciences, University of Tabriz, Iran

10.22111/jneh.2024.43735.1945

Abstract

Flooding is one of the most important and frequent natural hazards in Iran, which has increased in frequency and severity in recent years. The catchment area of the Zard River is not exempt from these conditions, as the occurrence of this destructive phenomenon in recent years has led to the damage of some residential areas, agricultural lands, and gardens located in this area. Therefore, according to the importance of the subject, with field investigations and study of sources, firstly the slope layers, slope direction, altitude classes, lithology, precipitation, land use, drainage density, and distance from the river as effective criteria for the occurrence of floods. The basins were identified and classified. Then, the information layers were prepared by the geographic information system, and the evaluation and standardization of the benchmark maps were performed using the fuzzy method. In the next step, the investigated factors were evaluated in the form of critical weighting, and finally, the final analysis and modeling weree done using Vicor's method as one of the multi-criteria decision analysis methods. The results of this research showed that among the effective factors in causing floods, slope with a weighting factor of 0.157, height with a weighting factor of 0.133, and land use with a weighting factor of 0.127 are the most important factors in causing floods in the basin. The river is the Zard. In addition, 10.78% and 16.71% of the area of the basin are in the very high-risk class, which indicates the potential of this basin for flooding. Therefore, flood risk zoning can be an effective tool in the implementation of conservation, watershed, and basin management measures.

Keywords

Main Subjects

Environmental Hazards

References

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