Before it reaches its delta, it flows through a narrow valley between the Arakan Mountains to the west and the Pegu Mountains to the east.  
It is navigable by steamers to Bhamo and by launches to Myitkyina [me-IT-kee-eena].  Before it reaches its delta, it flows through a narrow valley between the Arakan Mountains to the west and the Pegu Mountains to the east.  Formed by the confluence of the Nmai and Mali rivers, its chief tributary is the Chindwin River.  Its origins lie in the Kumon Mountains, and this river flows approximately 1,000 miles before reaching the vast delta at Henzada on the Andaman Sea.  FTP, name this waterway on which Yangon lies, the chief river of Myanmar.
It is navigable by steamers to Bhamo and by launches to Myitkyina [me-IT-kee-eena].  
Irrawaddy River