How does the Brahmaputra River flow through Arunachal Pradesh?

In Arunachal Pradesh, the Brahmaputra River is known as the Dihang or Siang River. It enters the state from the north after flowing through the Himalayas from Tibet.12

Upon entering the state, the river winds southward across its length, carving a narrow, steep-sided gorge through the mountainous terrain. As it moves through this region, it maintains a generally southerly direction before turning toward the southeast as it winds out of the mountains. The river finally emerges onto the northern edge of the Assam plains near the town of Pasighat. Shortly after passing Pasighat, just south of the border between Arunachal Pradesh and Assam, it is joined by the Dibang and Lohit rivers.12