Question: where do bhagirathi and alaknanda join to form ganga?
Answer: Devprayag is the confluence of two holy rivers Alaknanda and Bhagirathi to form Ganga. According to religious scriptures, Devprayag is one of the five important holy confluences. Rivers like Bhagirathi, Alaknanda & the mythological river Saraswati (flowing underground) meet to from the River Ganga.