Ok i will tell u something about ganga river,
the length of river ganga is 2525 km.
it floats the through the cities are Varanasi, Kanpur, ghazipur, haridwar, calcutta, patna. allahabad. it floats through bangladesh also.
it is a sacred river thought by the hindus on the name of goddess ganga.the ganga is mentioned in the vedas and that v1 veda is the rigveda. it is also known as ganges. it starts from the bay of bengal and ends in himalyas.