On 15th August 2018, due to continuous rainfall for 3 days, a debris flow occurred near Mundanpara,  Pathanamthitta District, having 14 m length, 10m width and 140 m run out distance.  Heavy discharge along the seasonal stream due to heavy rainfall incre
As per the information by the local people, similar event happened along the same flow path, around 20 years ago.
Mundanpara slide 6
Mundanpara
Unstable debris material on the upslope as well as along the slide course needs to be removed, No settlement should be allowed on the near vicinity and across the slide course/Nala. The debris material over the culvert needs to be cleared.
Heavy discharge along the seasonal stream due to heavy rainfall increased pore water pressure and decreased shear strength of the overburden material resulting in  slope failure and discharge of water and debris along the seasonal stream.