Published Paper Details:

The present study Coonoor macro-watershed falls in the north-eastern part of Bhavani River Sub-Basin, Nilgiris District, Tamil Nadu, India where severely affected by landslide during 1978 and 1979. Weight of Evidence Method (WofE) is a quantitative data-driven method used to combine datasets. It also uses to take the parameters associated with dependant variables. WofE model used to prepare the landslide susceptibility map. A pair of weights, i.e, W+ and W-, is calculated for each sub-variables of a layer, which are dependent on the spatial relationship between the landslides and evidences. This calculation is done by applying likelihood ratios, which describe the possibility of occurrence of landslides in the presence and absence of evidences. The final product of this analysis is a map showing relative proneness of the terrain landslides i.e., landslide susceptibility based on certain evidences. The LSM is categorises into five classes viz., very low, low, moderate, high and very high based on Natural Breaks method. The landslides are overlaid on the LSM prepared and the number of landslides falling in each landslide susceptibility class is determined. The landslide susceptibility map helps to people in practically and cost effective way to identify the areas where the landslides occurred in past or may occur in future.