Situated perfectly on the southern bank of the great river Ganges, Patna is positioned in the fertile Indo-Gangetic plains of North India. The geography of the city is uniquely defined by its waterways; in addition to the Ganges, Patna is historically flanked by the Sone, Gandak, and Punpun rivers, making it one of the largest riverine cities in the world.
The terrain is remarkably flat, entirely devoid of any nearby mountains or rocky outcrops. This flatness is the result of millennia of alluvial deposits from the Himalayan rivers, which have gifted the region with some of the most fertile agricultural soil in the world.
Because of its riverine location, the geography brings both immense bounty and occasional challenges. While the rich soil supports abundant agriculture in the surrounding hinterlands, the city's low elevation and proximity to major rivers make it susceptible to seasonal flooding during the intense Indian monsoon.