•   This stretch of the river originates from mountains where the river’s momentum is high. They are highly erosive in their upper courses and carry massive amounts of silt and sand. In the upper stretch, the water is crystal clear, cool, and rapidly flowing. The river passes through steep terrain. When the water travels down along the upper course, the river channel becomes increasingly narrow.

Features of upper course of river are:

•   Rugged and have steep slopes

•   Riverbeds are rocky and narrow

•   Steep and V-shaped

•   Water current increases as Several tributaries connect into the main river