Flood risk analysis using random forest machine learning method (Case study: Mashhad city)

Document Type : Research Article

Authors

1 Ph.D in Environment assessment and land use planning, Faculty of Fisheries and Environment, Gorgan University, Gorgan ,Iran

2 Professor, Faculty of Fisheries and Environment, Gorgan University, Gorgan ,Iran

3 Associate Professor, Faculty of Fisheries and Environment, Gorgan University, Gorgan ,Iran

4 Associate Professor, Faculty of Geography, University of Rennes 2, France

10.22059/ije.2022.346677.1667

Abstract

Abstract
Flood is one of the most common natural disasters that causes significant financial and human losses. Although rainfall is low in many parts of Iran, in some areas, the highest amount of annual rainfall occurs in just one day or a short period, leading to floods. Due to geological structure and ecosystem destruction, the surface water during floods can be highly polluted and often carries a lot of sediment, which increases flood damage. To reduce potential flood damage, planners and decision-makers must be aware of the time and location of floods. This requires the use of new methods for predicting floods and preventing their damage. In this study, the Random Forest (RF) machine learning method was used to predict the location of floods in Mashhad city, and its performance was evaluated. The impact of each factor including average basin elevation and slope, slope direction, topographic moisture index, drought index, distance from waterways, geology, land use, waterway density, waterways, and maximum average annual rainfall was also examined in this prediction. The evaluation results of the RF model output showed an AUC value of 95%. Overall, the results showed that the RF model has high accuracy in identifying flood-prone areas in the Mashhad city basin.

Keywords

Main Subjects

References

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Iranian journal of Ecohydrology
Volume 10, Issue 1
April 2023
Pages 1-15

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History

  • Receive Date: 18 May 2022
  • Revise Date: 19 August 2022
  • Accept Date: 19 December 2022

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