No special name. Ganga only
The ganga is navigable from its mouth right upto patna
Chambal and Betwa Joins Yamuna at Etawah district and Hamirpur town in UP. Furthur moving to the East, Yamuna Joins Ganga at Triveni Sangam, Allahabad. Son River joins River Gange near Patna, Bihar.
Some major cities located on the River Ganga in India include Varanasi, Kanpur, Allahabad, Patna, and Haridwar. These cities have cultural, historical, and religious significance and are important hubs for trade, tourism, and pilgrimage along the Ganges.
the modern name of patliputra is Patna
Varanasi, Kolkata, Allahabad, Haridwar, and Patna, India are all on the banks of the Ganga, from what I know. Also a fork of the Ganga runs near Dhaka, Bangladesh before entering into the Bay of Bengal.
The Ganga River, an Hindu name for the Ganges River, is a proper noun, the name of a specific thing. Ganga is the personification of the sacred river, the goddess Ganga, also a proper noun, the name of the goddess.
patna
patna
Patliputra
PatnaPataliputrapatnaNo
the old name of Bihar is Patna
Pataliputra