 The Isla Botija Nature Reserve was one of the first protected area (1958) created in the low delta of Parana river
The Predelta National Park, created in 1992, protects a sample of the Upper Delta.It is in the southwest of Entre Ríos, south of Diamante, and has an area of , occupied by low-lying islands subject to flooding, as well as lagoons and swamps.The Paraná Delta Biosphere Reserve is composed of the second and third sections of the Islands of the San Fernando Delta, located just north of Buenos Aires.