3-4 days heavy rainfall led to river full of RBM which caused the toe cutting of the river bank, also the increase of pore pressure in unconsolidated sediments on the natural steep slope led to 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 to road. Construction of new bridge is under process but the u/ s abutment is in RBM which is under risk due to toe cutting and erosion
UK/Pith/ Munsyari-Jauljibi/LS/0039
Dharchula village
Flood protection wall, proper dressing of the hill side slope to mild angle, retaining wall towards river side
Presence of loose and unconsolidated material, flooding of the river with high current and toe erosion in soil. Also the development of the pore pressure and reduction of the shear strength of the material due to saturation by water percolation, gully er