GIS based Landslide
Susceptibility Analysis of extremely sensitive Dharamshala region, Himachal Pradesh,
India
Dhiman S., Rajput P., Shekhar S. and Anthwal P.
Disaster Advances; Vol. 18(9); 81-88;
doi: https://doi.org/10.25303/189da081088; (2025)
Abstract
Landslide Hazards Zonation is one of the key tools for geologists, civil engineers,
land-use planners and geographers for prevention and mitigation strategies for landslide.
Primary step of present study is to prepare input raster layers of various factors
that control landslides. Slope, geological formations, rainfall, land use, lineament
density, drainage density and road density are seven controlling factors that are
selected for this purpose. The weighted Overlay Method is extensively applied in
the present study for assigning weights and ranks to various factors using Analytic
Hierarchy Process. Using multi-criteria analysis which is based on ranks and weight,
Landslide Susceptibility Index is calculated. Finally, Landslide susceptibility
map of study area is developed.
Based on the susceptibility Index, study area is divided into five susceptibility
zones from very high to very low. The classification is as very high (5%), high
(26%), moderate (40%), low (28%) and very low zones (1%). This susceptibility zonation
map is very helpful for an exhaustive study of the area concerning landslide prevention
and its mitigation on one hand, as well as, proper land-use planning for tourism
and societal development of Dharamshala city and its surrounding areas on the other
hand.
