Why is huang he also known as the yellow river?

Originating in the Bayankala Mountains in Qinghai province in western China, it flows through 9 provinces of China and empties into the Bohai Sea. It is called the Yellow River because huge amounts of loses sediment turn the water that color.

Use of
http://wwf.panda.org/about_our_earth/about_freshwater/rivers/yellow_river/