Guys I am just very curious as what u think was the main reason behind Koshi flood. Who is to blame. Is it just a technological flaw or there is something more to it.

My understanding so far:

British India always had view that the flow of Koshi should never be obstructed. But After they left. a dam was constructed and treaty made where maintenance was responsibility of Indian side i.e, Bihar govt.. and because of violent nature of the river, at a way too low flow value, the disaster happened.

Lack of maintenance of barrage

Blame game, security threats from local thekedar and others

Koshi is simply way too huge water flow to check its flow by constructing a dam, It should be left to follow its nature course.

What do u think??

Why this happened when the flow was way too low than the capacity that could be sustained (9.5 lakh cusecs I guess).