And Gangā is called both Tripathagã and Bhăgirathi. And she is know as Tripathagā, is consequence of her proceeding in three directions.
गङ्गा त्रिपथगा नाम दिव्या भागीरथीति च। त्रीन् पथो भावयन्तीति तस्मात् त्रिपथगा स्मृता ॥