The unprecedented Uttarakhand floods of June 2013 generated a large volume of scientific literature. They offered clear technical explaination to the media reported sequence of events ofen in a historical perspective. Some ambiguities, however, remained in some of the works. For example. Dobhal et al. described that starting from 06:45 on 17 June 2013, the Chorabari lake catastrophically emptied within 5-10 min. (Correspondence)

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