Landslide Susceptibility Mapping of Khimti Watershed, Nepal

  • Roma Thakurathi Pulchowk campus
  • Surendra Maharjan Department of Civil Engineering, Pulchowk Campus, Institute of Engineering, Tribhuvan University, Nepal
  • Bibid Jibi Ghimire Department of Civil Engineering, Pulchowk Campus, Institute of Engineering, Tribhuvan University, Nepal
  • Vishnu Prasad Pandey Department of Civil Engineering, Pulchowk Campus, Institute of Engineering, Tribhuvan University, Nepal
Keywords: Frequency ratio, GIS, Landslide, Landslide susceptibility index

Abstract

Many places of Nepal are vulnerable to landslides. Past and recent evidences have shown that the area near the hydropower areas is more vulnerable towards landslides. As many hydropower structures are under construction near the Khimti region in Nepal, studying the vulnerability of this area is of great importance.
This study aimed at mapping landslide susceptibility of Khimti watershed using GIS and frequency ratio approach. Relative frequency is used as normalized frequency ratio and predictive rate was applied to the relative frequency to identify the selected indicators contribution towards landslide susceptibility. A total of
70 landslides were identified during landslide inventory preparation. The success and prediction rate for this study are found to be 70.3% and 65.4% respectively. The observations conclude that less stream power index contribute most to landslide susceptibility.

Published
2021-11-22
How to Cite
Thakurathi, R., Maharjan, S., Ghimire, B. J. and Pandey, V. P. (2021) “Landslide Susceptibility Mapping of Khimti Watershed, Nepal”, Nepal Journal of Civil Engineering, 2(1), pp. 37-48. Available at: https://civil.pcampus.edu.np/journal/index.php/njce/article/view/2.1-4 (Accessed: 28March2024).