Debris Flow  occurred in  Perunkala on 15th August 2018  due to heavy rainfall and the geoscientific cause being the reduction of strength on super saturation due to excess pore water pressure. House of Gopi Illickal to be relocated which is in the nala
Along the left flank of this slide about 500m, cracks are observed.
Perumkala
Nala path to be channalised. Pipe culvert to be made at the road, destroyed house ( Gopi Illickal) along the nala path to be relocated.
Reduction of strength on super saturation due to excess pore water pressure. Unscientific slope modification.