Published Paper Details:

Subansiri is one of the major tributaries of the Brahmaputra in the north bank. The basin cover and are aabout 30,000 sq km where about area of 2700 sq km of the alluvial plain of Lakhimpur and Dhemaji districs of Assam and Subansiri districts of Arunachal Pradesh. The river which rise in the snowy part of the Himalaya enters into the plain near Dolongmukh and jois the Brahmaputra after flowing through plain southward for over 67 km. The river with its tributaries drain area of over 2200 sq km of Lakhimpur and dhemaji districts and on of the most important tributaries of Brahmaputra in its north. Within the plains the width of the river varies considerably from less than a km to over 2 km at a place, the river channel is mostly meandering but is also braided and straight in some parts. The river channel bifurcates near Hechamara and reunites near Bebejia after flowing for 12 km. and western flow is known as Ghuna-Suti. The Subansiri river channel has shifted considerably during the last sixty years, near Chouldhowaghat it being shifted nearly 6 km westward since 1950. It is a perennial river: the snow melt account for most of the discharge during the dry season.