India, Aug. 28 -- Parts of Bihar faced the threat of a deluge as water levels in the Ganga, Gandak, Kosi and Burhi Gandak rivers showed a rising trend following the devastating flash floods in neighbouring Nepal.

The Nepal floods were triggered after an ice-rock landslide blocked a river near the country's border with China. The floods have affected several districts and left at least 826 people missing, according to Nepal's disaster management authorities.

This has led to both Uttar Pradesh and Bihar administrations stepping up monitoring of their river systems downstream of the rivers of the Himalayan nation.

"The water levels of several rivers, including the Ganga, Gandak, Kosi and Burhi Gandak, have been rising following continuous...