This tributary flows mainly from east to west with a variable channel pattern including braided, meandering, straight, gorge and blocked lake.

[2] During Monsoon season, especially from June to September, the volume of water in the river and its tributaries rises heavily due to continuous rainfall in Sikkim.

The important towns along the route of this river are Rangpo, Rorathang, Rongli, Kumrek etc in Pakyong District of Sikkim.

The river originates from Lake Menmecho near Dzuluk in Gangtok district of Sikkim.

This article related to a location in the Indian state of Sikkim is a stub.