Source: The Ganga originates from the Gangotri Glacier at an elevation of 4,356 meters (14,290 feet) in Uttarkashi district, Uttarakhand. The glacier is 30 km long and 2-4 km wide. The river emerges from the glacier's terminus at a place called Gaumukh ("Cow's Mouth") โ named because the ice formation resembles a cow's face.
At Gaumukh, the river is known as Bhagirathi. It flows through steep Himalayan gorges, receiving several tributaries. At Devprayag, the Bhagirathi meets the Alaknanda (coming from Badrinath). After this confluence, the river is officially named GANGA.
The river then descends through the Himalayas, entering the plains at Haridwar โ considered one of the holiest cities. From here, it flows across the vast Indo-Gangetic Plain, growing wider and slower as it receives numerous tributaries from both the Himalayas (left bank) and the Peninsular plateau (right bank).