Rudraprayag is a confluence where Mandakini from Kedarnath meets Alakananda from Badrinath. From there Alakananda continues her journey to Devprayag where she meets Bhagirathi.
At this point the river is very forceful and moves very quickly.
Taking bath in Ganga at all five confluences is considered highly auspicious. Ghat in Rudraprayag is very small and fenced because the river is very forceful.
The place is named after Rudra, an aspect of Lord Shiva. It is said that Shiva appeared here as Rudra to bless Narada Muni. Nearby is the place where Narada Muni is said to have performed austerities.