Landslide risk assessment in the region along NH 10, Sikkim

Landslides are a combined result of weak geology and geomorphology and human destruction with the development activities only for human ease. Landslide is one of the most devastating natural hazards in all the Himalayan states specially Sikkim. A case study was carried out in a region along NH 10. The people in the area are the most affected as their only means of economy and communications are disrupted and totally destroyed by this malice and atleast 100 crore was lost in the last 5 years. The study was focused on landslide monitoring, landslide susceptibility mapping and landslide risk mapping. The method used in this study was AHP (analytical hierarchical process) and quantitative raster maps were integrated to produce landslides susceptibility map and risk map and for this geospatial techniques were used.