Landslide Hazard Zonation Of District Rudraprayag Of Garhwal Himalaya

The degree of hazard due to landslide in any region is difficult to assess manually. Landslides are considered as one of the most destructive geological processes causing not only the enormous damage to roads, bridges, houses but even cause loss of life. Though, landslide hazards cannot be completely prevented but their intensity and severity can be minimized by taking effective mitigation measures and by planning for disaster preparedness. For this purpose, landslide hazard zonation maps are prepared. The landslide hazard zonation is the spatial prediction of landslide potential areas and they are useful for planning and implementation of various developmental schemes in hilly areas. The main aim of this study is to prepare the landslide hazard zonation of Rudraprayag District. The Landslide hazard evaluation factor(LHEF) rating scheme have been used to prepare landslide hazard zonation (LHZ) of this region. LHEF Rating scheme is an empirical approach, which demarcates hill-slopes into zones of varying degree of stability on the basis of their relative hazards. The inherent and external causative factors responsible for slope instability has been taken input parameters and then integrated in GIS environment to arrive at landslide zonation map of the area. The landslide hazard zonation map classifies the area into four classes of landslide susceptible zones i.e., very high, high, moderate and low hazards.