Heavy and prolonged rainfall in the catchment of Alaknanda river and Khirao Ganga had brought down huge debris material. Khirao Ganga had blocked the course of  the Alaknanda river and created an artificial lake for some time. This was breached later on
An Interim Report on Preliminary  Geological  Slope Stability Assessment of the Recent Disaster Affected Areas in Parts of Chamoli District, Uttarakhand by Bhupendra Singh, Bhupender Singh, Ajay Kumar and Arindam Roy, Senior Geologists, M-IV, NR GSI Dehr
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Binakuli, At the confluence on Khirao Ganga and Alaknanda river.
Concrete retaining wall, slope modification by benches.
Continuous heavy rainfall caused saturation of overburden mass resulting in reduction of shear strength, toe cutting by Alaknanda River and direct impact of Khairo Ganga River.