Title: Paraguay River
Content:  The Paraguay River (Río Paraguay in Spanish, Rio Paraguai in Portuguese, Ysyry Paraguái in Guarani) is a major river in south-central South America, running through Brazil, Bolivia, Paraguay and Argentina. It flows about 2695 km from its headwaters in the Brazilian state of Mato Grosso to its confluence with the Paraná River north of Corrientes and Resistencia.
Title: Paraguay River
Content:  The Paraguay's source is south of Diamantino in the Mato Grosso state of Brazil. It follows a generally southwesterly course, passing through the Brazilian city of Cáceres. It then turns in a generally southward direction, flowing through the Pantanal wetlands, the city of Corumbá, then running close to the Brazil-Bolivia border for a short distance in the Brazilian states of Mato Grosso and Mato Grosso do Sul. From the city of Puerto Bahia Negra, Paraguay, the river forms the border between Paraguay and Brazil, flowing almost due south before the confluence with the Apa River. The Paraguay makes a long, gentle curve to the south-southeast before resuming a 
Title: Paraguay River
Content:  south-southwesterly course, dividing the country of Paraguay into two distinct halves: the Gran Chaco region to the west, a largely uninhabited semi-arid region; and the eastern forested departments of the country, accounting for some 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 400 km 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 275 km before it reaches its end, joining with the Paraná River.
Title: Transport in Paraguay
Content:  Paraguay has 3100 km of inland waterways. The Paraguay and Paraná are the country's two main rivers. The Paraguay River, with headwaters at Mato Grosso, Brazil, flows southward, converging with the Paraná in southwestern Paraguay, and then flowing to the Río de la Plata estuary in Argentina, the entrance for the great majority of ships servicing Paraguay's ports.
Title: Geography of Paraguay
Content:  course. The major tributaries entering the Paraguay River from the Paraneña region—such as the Apa, Aquidabán, and Tebicuary Rivers—descend rapidly from their sources in the Paraná Plateau to the lower lands. There they broaden and become sluggish as they meander westward. After heavy rains these rivers sometimes flood nearby lowlands. About 4700 km long, the Paraná River is the second major river in the country. From Salto del Guairá, where the former Guairá Falls were located, the river enters Paraguay and flows 800 km to its juncture with the Paraguay River and then continues southward to the Río de la Plata Estuary at Buenos Aires, Argentina. In general, the Río Paraná is navigable by large ships 
Title: Paraguay River
Content:  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 1095000 km2, covers a vast area that includes major portions of Argentina, southern Brazil, parts of Bolivia, and most of the country of Paraguay. Unlike many of the other great rivers of the Rio de la Plata Basin, the Paraguay has not been dammed for hydroelectric power generation; for this reason it is navigable for a considerable distance, second only to the Amazon River in terms of navigable length on the continent. This makes it an important shipping and trade corridor, providing a much-needed link to the Atlantic Ocean for the otherwise landlocked nations of Paraguay and Bolivia. It serves such important cities as Asunción and Concepción in Paraguay and Formosa in Argentina. The river is also a source 
Title: Geography of Paraguay
Content:  narrower than the tributaries of the Paraguay River, except the Iguazu River at the Iguazu Falls. Sixteen of these rivers and numerous smaller streams enter the Paraná River above Encarnación. Paraguay's third largest river, the Pilcomayo River, flows into the Paraguay River near Asunción after demarcating the entire border between the Chaco region and Argentina. During most of its course, the river is sluggish and marshy, although small craft can navigate its lower reaches. When the Pilcomayo River overflows its low banks, it feeds the Patiño Estuary (Estero Patiño). Drainage in the Chaco region is generally poor because of the flatness of the land and the small number of important streams. In many parts of the 
Title: Río Verde (Paraguay)
Content:  Río Verde (Spanish for "green river") is a river of Paraguay which flows along the Chaco region. It is a tributary of the Paraguay River. During the Paraguayan War, Paraguay's borders with Argentina were considered to be drawn using this river as reference. Due to president Rutherford B. Hayes' influence, however, the borders were instead drawn at Pilcomayo River.
Title: Geography of Paraguay
Content:  Paraguay is a 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 both subtropical and tropical climates.
Title: Geography of Paraguay
Content:  The word Paraguay can be translated as the Paradise of Waters, as there's plently to be found all around the country, inclunding underneath it; see Guarani Aquifer. The Paraguay River has a total course of 2600 km, 2300 km of which are navigable and 1200 km of which either border on or pass through Paraguay. During most years vessels with 21 m drafts can reach Concepción without difficulty. Medium-sized ocean vessels can sometimes reach Asunción, but the twisting meanders and shifting sandbars can make this transit difficult. Although sluggish and shallow, the river sometimes overflows its low banks, forming temporary swamps and flooding villages. River islands, meander scars, and oxbow (U-shaped) lakes attest to frequent changes 

Question: where does the paraguay river start and end?
Answer: Paraná River.