Baspa river is a side stream of Sutlej river.The origin of Baspa river is from the Indo-Tibetan border and is fed by perennial glaciers to form the Baspa valley. It is also known as Sangala valley, famous for its natural sight seeing beauty in Himalayas. Baspa river originates from the Baspa hills and merges with the Sutlej river from the Karcham.The lower end of the Baspa valley is dwelled in population approximately 95km of the valley, all the way from Chitkul to the merging point of Baspa and Sutlej river. The upper and middle slant of the Baspa valley alongside river is covered with pine trees and oak forest. There are other picturesque towns along the territory including Chitkul and Rakcham.
The river course of Baspa river originates from the perennial glaciers of the Indo-tibetan borders and flow through the Himalayan region to the convergence point of Baspa and Sutlej known as Karcham.