Saraswati River (Uttarakhand) Wikipedia
Saraswati River is a tributary of Alaknanda River flowing in Uttarakhand State, India. It joins Alaknanda River at Keshav Prayag, near Mana village, Badrinath. In turn, the Alaknanda merges with the Ganges at Devprayag, Uttarakhand, which is known as Bhagirathi till that point. A natural stone bridge, named "Bhim Pul", lays across flowing Saraswati river, making a passage towards Vasudhara falls and Satopanth Lake. It is believed by locals that Bhim Pul is a rock bridge founded by Bhima of Mahabharatha, to help Droupadi to cross the rivulet.