A stream bank failure took place below the road heading from Pandanthorai to Devarshola, near Nellakottai village, Nilgiri district. The main causative factor for the slide is due to heavy rainfall, there was increase in pore water pressure and decrease
Ahmed A. and Achrya, S., 2020. Macroscale (1:50,000) Landslide Susceptibility Mapping in parts of Toposheets nos. 58G/4,7,8,9,10,13,14, 58H/1,5 & 58A/02, 06, 08 & 10 parts of Tirunelveli, Theni, Madurai , Virudunagar & Nilgiri Districts of Tamil Nadu
Nellakottai stream bank failure
Nelakottai
Removal of loose material and construction of gabion walls along the nala course were ever required.
Due to heavy rainfall, there was increase in pore water pressure and decrease in shear strength of the overburden material which resulted in triggering landslide.