Landslide susceptibility map delineates the potential zones for landslides occurrence. The paper presents anintegration approach through spatial data analysis in GIS for landslide susceptibility mapping in Kolli hill, Namakkal District, Tamil Nadu. Six important causative factors for landslide occurrences were selected and corresponding thematic data layers were prepared in GIS. Topographic maps, satellite image, field data and preparation of the following maps like Drainage, lineament, soil, geology, slope, land use/land cover. Numerical weights for different categories of these factors were determined based on the weighted thematic layers were integrated in GIS environment to generate the landslide susceptibility map of the area.The landslide susceptibility map classifies the area into five different landslide susceptible zones i.e., very high, high, moderate, low and very low. This map was validated using the existing landslide distribution in the area.
Impact Factor
2022: 6.012
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