No special name. Ganga only
The ganga is navigable from its mouth right upto patna
Allahabad,Kanpur,Varanasi,Lucknow,Patna and Kolkata
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.
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.
patna
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.
PatnaPataliputrapatnaNo
Patliputra
patna
Pataliputra
the old name of Bihar is Patna