A debris flow occurred due to heavy rainfall to the west of Sastha kovil, Virudhunagar district, having 80 m length, 25 to 30 m width and about 200 m run out distance. The geo-scientific cause of the slide was Due to heavy rainfall, there was increase in
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
A paleo first order stream widened due to heavy rainfall. First order stream drains seasonally.
Sastha kovil west debris flow
West of Sastha kovil
Unstable debris material along the slide course needs to be removed, A buffer zone should be made along the stream course and further no settlement should be allowed on the near vicinity of the slide course.
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.