Heavy rainfall for 3 days caused the toe erosion of natural slope on which loose and unconsolidated sediments were present caused this landslide. 

An interim report on Preliminary slope stability assessment of recent disaster affected areas of Pithoragarh District, Uttarakhand by A Bishwapriya, Suptg. Geologist, M V Dhakate and P K Gajbaiye, Sr Geologist, M IV, NR,Dehradun (LHZ/NR/UPUK/2013/056)
High risk zone. The village Banga bagar (Nepal) on opposite bank is also affected
UK/Pith/ Tawaghat-Jauljibi/Vil/BE/0052
Village Dharchula
Flood protection wall, dredging of the river
The major geological causes are presence of loose/unconsolidated material, toe erosion in soil/debris due to heavy flash flood and gully erosion. Also the development of pore water pressure and reduction of shear strength due to water percolation added t