Studying the Current Situation and Establishing a Map of Flash Flood Risk Zoning in Lai Chau Province, Vietnam

Authors

  • Quoc Lap Kieu Faculty of Natural Resources and Environment, Thainguyen University of Sciences, Tan Thinh Ward, Thainguyen, 250000, Vietnam
  • Thi Hong Nguyen Faculty of Natural Resources and Environment, Thainguyen University of Sciences, Tan Thinh Ward, Thainguyen, 250000, Vietnam

Keywords:

GIS, zoning, risk, flash floods, Lai Chau

Abstract

Lai Chau is a mountainous province in the North of Vietnam that frequently experiences flash floods. Flash floods in Lai Chau province were formed by the combined effects of many factors such as topographical characteristics, current land use, soil type, vegetation cover combined with river density and rainfall. In this study, the author analyzed the current state of flash floods, assessed the factors that caused flash floods and established a map of flash flood zoning in Lai Chau province. The flash flood risk area map is built on the basis of GIS spatial analysis, combining hierarchical analysis (AHP) and multi-criteria analysis method (MCA). Data collected for the study is mainly from Sentinel 2 images, statistical data and actual investigation. Research results show that the area with high and very high potential for flash floods accounts for 22.03% of the natural area, and the area with medium risk accounts for 44.42%. Areas with low and very low levels account for 33.55% of the area in Lai Chau province of Vietnam.

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Published

2022-02-18

How to Cite

Kieu, Q. L., & Thi Hong Nguyen. (2022). Studying the Current Situation and Establishing a Map of Flash Flood Risk Zoning in Lai Chau Province, Vietnam. International Journal of Sciences: Basic and Applied Research (IJSBAR), 61(2), 47–56. Retrieved from https://www.gssrr.org/index.php/JournalOfBasicAndApplied/article/view/13781

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