Siyom River

The Siyom River is a right bank tributary of the Brahmaputra (Dihang or Siang) in the Indian state of Arunachal Pradesh.

[1] The Siyom rises on the south of the main ridge of the Assam Himalaya not far from the border with Tibet.

[1] The Mouling National Park is located on the east bank of the river.

The river passes the district capital Aalo and finally flows into the Brahmaputra 50 km above Pasighat.

The catchment area of the Siyom borders in the east, north and northwest on that of the Yarlung Tsangpo and in the southwest on that of the Subansiri River.