Reva or Rewa is one among the numerous names of Narmada River. This holy river in Hinduism is known as Reva because of her swift flow. It is the speed of the river that got her the name Reva.
There are numerous stories regarding the origin of Narmada River in Hindu scriptures. She is considered to be the daughter of Lord Shiva. It is believed that once while Shiva was meditating in the Amarkantaka Peak, Narmada spontaneously appeared from his body. Her sight evoked tenderness (narma) in Shiva and thus she was called Narmada.