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
Concepción, Paraguay Concepción, Paraguay Concepción () is a city & district in northern Paraguay and capital of the Concepción Department. It lies next to the Paraguay River. Founded by a Spanish Governor, named Agustín Fernado de Pinedo, the town prospered in the early years of the 20th century, as a centre for the north of the country, exploiting the new wealth of the Gran Chaco, and a river port. The town was also a centre for the Paraguayan Civil War of 1947. The city is the seat of the Roman Catholic Diocese of Concepción en Paraguay. Route 5 "Gral. Bernardino Caballero" connects