Why sutlej is called red river?

Answer 1

The Sutlej River is often referred to as the "Red River" due to the reddish color of its sediment-laden waters, particularly during the monsoon season when it carries a significant amount of silt and soil. This sediment comes from the erosion of the surrounding mountains and plains, giving the river its distinctive hue. Additionally, the river’s name may also be linked to local legends and historical accounts that describe its waters as red.