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The Paraná Delta ((スペイン語:Delta del Paraná)) is the delta of the Paraná River in Argentina and it consists of several islands known as the Islas del Paraná. The Paraná flows north–south and becomes an alluvial basin (a flood plain) between the Argentine provinces of Entre Ríos, Santa Fe and Buenos Aires then emptying into the Río de la Plata. It covers about and starts to form between the cities of Santa Fe and Rosario, where the river splits into several arms, creating a network of islands and wetlands. Most of it is in the jurisdiction of Entre Ríos Province, and parts in the north of Buenos Aires Province. The Paraná Delta is conventionally divided into three parts: * the Upper Delta, from the Diamante – Puerto Gaboto line to Villa Constitución; * the Middle Delta, from Villa Constitución to the Ibicuy Islands; * the Lower Delta, from the Ibicuy Islands to the mouth of the river. The total length of the delta is about , and its width varies between . It carries 160 million tonnes of suspended sediment (about half of it coming from the Bermejo River through the Paraguay River) and advances from (depending on the source) per year over the Río de la Plata.〔 It is the world's only river delta that is in contact not with the sea but with another river. The Lower Delta was the site of the first modern settlements in the Paraná-Plata basin and is today densely populated, being the agricultural and industrial core of Argentina and host to several major ports. The main course of the Paraná lies on the west of the delta, and is navigable downstream from Puerto General San Martín by ships up to Panamax kind. ==Rivers of the delta== Among the many arms of the river are the Paraná Pavón, the Paraná Ibicuy, the Paraná de las Palmas, the Paraná Guazú and the smaller Paraná Miní and Paraná Bravo. The Paraná Pavón is the first major branch. It has a meandering course that starts on the eastern side, opposite Villa Constitución. Between the main Paraná and the Paraná Pavón lie the Lechiguanas Islands. The Paraná Pavón flows east and then turns south to be continued by the Ibicuy, which itself gives origin to the smaller Paranacito River, a tributary of the Uruguay River that passes by Villa Paranacito. The Paraná de las Palmas starts around the mouth of the Paraná Ibicuy, downstream from Baradero, flowing west into the province of Buenos Aires and then turning southeast again. The main course is continued by the other major branch, the Paraná Guazú. In turn, the Paraná Guazú sprouts two east-flowing branches in the territory of Entre Ríos: first the Paraná Bravo, and then the Paraná Miní. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Paraná Delta」の詳細全文を読む スポンサード リンク
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