Amazon river dolphin widespread river dolphins. They are present in six countries in South America: Bolivia, Brazil, Colombia, Ecuador, Peru, and Venezuela, in an area covering about . The boundaries are set by waterfalls, such as the Xingu and Tapajós rivers in Brazil, as well as very shallow water. A series of rapids and waterfalls in the Madeira River have isolated one population, recognized as the subspecies "I. g. boliviensis", in the southern part of the Amazon basin in Bolivia. They are also distributed in the basin of the Orinoco River, except the Caroni River and the upper Caura River in Venezuela. The
American River, South Australia nearby Muston publicises access via an alternative, private air strip. American River, South Australia American River is a town in the Australian state of South Australia located on the western shore of Eastern Cove on Kangaroo Island. The area now known as American River was first visited by Europeans in 1802 when Matthew Flinders landed to survey this part of Kangaroo Island. In 1803, a group of American sealers camped for four months in the area. They arrived on the brig and built their own 35 ton schooner "Independence" from local timber. The town takes its name from this time.