The Dewal slide of Rudraprayag, Uttarkashi triggered due to heavy rainfall. The rock cum debris slide got reactivated due to erosion caused by flash flood whereas at crown portion it is because of over saturation of overburden.  Constant river hitting at
Interim Report on Preliminary Slope Stability Assessment of the recent disaster affected areas of Rudraprayag district, Uttarakhand by S.K.Tripathi, PVS Rawat, H. Bahuguna Suptdg. Geol, AP Thapliyal Sr.Geol., K. Lakshmanan& Jina Mandal Geologists, M-IV,N
UK/RUD/NH109/13
NH-109, Dewal slide
Construction of gabion wall
Toe erosion, oversaturation, reduction in shear strength