I bet this is just making a statement. Turn off the water for a few days then turn it back on.

As people pointed out, if they keep it closed very long it will overflow so India doesn’t want that. Also blowing up the dam is one hell of a stupid suggestion. Can you imagine how bad that would be to the people downstream? And you know who is down? Pakistan. That would be so dumb.

This is a political point, and this can’t possibly be cutting off water for any real length of time.