The debris flood on the Melamchi River has been continuous since the start of the monsoon on 15 June. Since then, more than 20 people have been killed, more than 100 homes washed away and 400 households displaced. Six highway bridges, and 12 suspension footbridges have been swept away. The $700 million Melamchi Water Supply Project has been damaged even before it came into full operation, and will need expensive and extensive repairs.
Further : https://www.nepalitimes.com/latest/the-monsoon-mess-in-melamchi/