Triveni Sangam
In Hindu tradition Triveni Sangam is the "confluence" of three rivers. Sangama is the Sanskrit word for confluence. The point of confluence is a sacred place for Hindus. A bath here is said to flush away all of one's sins and free one from the cycle of rebirth.
Triveni Sangam at Allahabad
One such Triveni Sangam, in Prayag (Allahabad) has two physical rivers — Ganges and Yamuna — and the invisible Saraswati River. The site is in Prayag, India. A place of religious importance and the site for historic Kumbh Mela held every 12 years, over the years it has also been the site of immersion of ashes of several national leaders, including Mahatma Gandhi in 1948.
The rivers maintain their identity and are visibly different as they merge. While the Yamuna is deep, calm, and greenish in colour, the Ganga is shallow, forceful, and clear. The Saraswati remains hidden, but the faithful believe that she makes her presence felt underwater. During the monsoon, when the rivers are in full flow, the confluence is seen clearly due to the force of the waterThe same force makes having a dip at the confluence difficult. While the Ganges is only 4 feet deep, the Yamuna is 40 feet deep near the point of their nexus. The river Yamuna merges into the Ganges at this point and the Ganges continues on until it meets the sea at the Bay of Bengal.