Paraguay River 98% of the country's inhabitants. As such the river is considered perhaps the key geographical feature of the country with which it shares its name. Some after flowing through the middle of Paraguay, at the confluence with the Pilcomayo River and passing the Paraguayan capital city, Asunción, the river forms the border with Argentina, flowing generally south-southwesterly for another before it reaches its end, joining with the Paraná River. The Paraguay River is the second major river of the Rio de la Plata Basin, after the Paraná River. The Paraguay's drainage basin, about , covers a vast area that includes
Geography of Paraguay Geography of Paraguay Paraguay is a landlocked country in South America, bordering Brazil, Argentina and Bolivia. The Paraguay River (Spanish: "Río Paraguay") divides the country into strikingly different eastern and western regions. Both the eastern region (officially called Eastern Paraguay, "Paraguay Oriental", and known as the Paraneña region) and the western region (officially Western Paraguay, "Paraguay Occidental", and known as the Chaco) gently slope toward and are drained into the Paraguay River, which separates and unifies the two regions. With the Paraneña region reaching southward and the Chaco extending to the north, Paraguay straddles the Tropic of Capricorn and experiences