Prayag means confluence in Sanskrit, the five river confluences, are Vishnu Prayag, Nand Prayag, Karn prayag, Rudra Prayag and Dev Prayag in the Garhwal Himalayas of Uttarakhand.
The Alaknanda River originates from the glacier fields of Chaukhamba and later joined by Saraswathi River near Mana.
The second prayag in the cascade sequence of the confluences of main Alaknanda River with Nandakini river.
The Alaknanda river is joined by the Pindar river from the Pindar glacier below the Nanda Devi hill range.
At Rudra Prayag,Alaknanda river meets the Mandakini river and temples dedicated to Rudranath the Lord Shiva and goddess Chamunda are located here.
Devprayag is the confluence of two holy India rivers Bhagirathi and Alaknanda, after this confluence the river is known as the Ganges.
The Prayag or Treveni Sangam at Allahabad, where the three rivers namely, the Ganges, the Yamuna and the Saraswati confluence is considered the holiest place in India. Prayag or Allahabad the city is the second oldest city in India.