Question: What is another officially known name for the river where Torrens Island is located?

full_context: Document 1: Port Adelaide: Port Adelaide is the name of a region of Adelaide, approximately 14 km northwest of the Adelaide CBD. It is also the namesake of the City of Port Adelaide Enfield council, a suburb, a federal and state electoral division and is the main port for the city of Adelaide. Port Adelaide played an important role in the formative decades of Adelaide and South Australia, with the port being early Adelaide's main supply and information link to the rest of the world.
Document 2: Torrens Island, South Australia: Torrens Island is a locality in the Australian state of South Australia located in the Adelaide metropolitan area within the estuary of the Port River about 16 km north-west of the Adelaide city centre.
Document 3: Port Noarlunga Reef Aquatic Reserve: Port Noarlunga Reef Aquatic Reserve is a marine protected area in the Australian state of South Australia located in waters in Gulf St Vincent adjoining the Adelaide metropolitan area and including part of the Onkaparinga River about 28 km south-west of the state capital of Adelaide.
Document 4: Port Noarlunga, South Australia: Port Noarlunga is a suburb in the City of Onkaparinga, South Australia. It is a small sea-side suburb, population 2,632, about 30 km to the south of the Adelaide city centre and was originally created as a sea port. This area is now popular as a holiday destination or for permanent residents wishing to commute to Adelaide or work locally. There is a jetty that connects to a 1.6 km long natural reef that is exposed at low tide. The beach is large and very long and has reasonable surfing in the South Port area whose name is taken from its location - 'South of the Port'.
Document 5: Torrens Island Power Station: Torrens Island Power Station is located on Torrens Island, near Adelaide, South Australia and is operated by AGL Energy. It burns natural gas in eight steam turbines to generate up to 1,280 MW of electricity. The gas is supplied via the SEAGas pipeline from Victoria, and the Moomba Adelaide Pipeline System (MAPS) from Moomba in the Cooper Basin. The station is capable of burning either natural gas or fuel oil. It is the largest power station in South Australia and was formerly the largest single power station user of natural gas in Australia.
Document 6: Port River: The Port River (officially known as the Port Adelaide River) is a river located north of the Adelaide central business district in the Australian state of South Australia.
Document 7: Port Noarlunga South, South Australia: Port Noarlunga South is a suburb in the Australian state of South Australia located in the Adelaide metropolitan area on the coastline of Gulf St Vincent about 30 km south of the state capital of Adelaide.
Document 8: Onkaparinga River Recreation Park: Onkaparinga River Recreation Park is a protected area occupying land in the estuary of the Onkaparinga River in South Australia. The recreation park which was established in 1985 is approximately 32 km from Adelaide city centre. It is the venue for recreational activities such as walking, canoeing, kayaking, recreational fishing and picnics.
Document 9: Mount Torrens, South Australia: Mount Torrens is a town in the eastern Adelaide Hills region of South Australia, 46 kilometres east-north-east of the state capital, Adelaide and 8 km east of Lobethal along the Onkaparinga River. It is located in the Adelaide Hills Council local government area. At the 2006 census, Mount Torrens had a population of 337.
Document 10: Torrens Island Concentration Camp: The Torrens Island Internment Camp was a World War I concentration camp, located on Torrens Island in the Port River Estuary near Adelaide in South Australia. The camp opened on 9 October 1914 and held up to 400 men of German or Austro-Hungarian background, or crew members of enemy ships who had been caught in Australian ports at the beginning of the war. They were held without trial under the provisions of the "War Precautions Act 1914".
Document 11: Barker Inlet: The Barker Inlet is a tidal inlet of the Gulf St Vincent in Adelaide, South Australia, named after Captain Collet Barker who first sighted it in 1831. It contains one of the southernmost mangrove forests in the world, a dolphin sanctuary, seagrass meadows and is an important fish and shellfish breeding ground. The inlet separates Torrens Island and Garden Island from the mainland to the East and is characterized by a network of tidal creeks, artificially deepened channels, and wide mudflats. The extensive belt of mangroves are bordered by samphire saltmarsh flats and low-lying sand dunes, there are two boardwalks (at Garden Island and St Kilda), and ships graveyards in Broad Creek, Angas Inlet and the North Arm.
Document 12: City of Port Adelaide Enfield: The City of Port Adelaide Enfield, located across inner north and north-western suburbs of Adelaide, is one of the largest metropolitan councils within South Australia. It was established on 26 March 1996 by the amalgamation of the City of Port Adelaide and the City of Enfield.
Document 13: Torrens Island Conservation Park: Torrens Island Conservation Park is a protected area located on Torrens Island in South Australia about 3.9 km north-northeast of Port Adelaide. The conservation park covers the majority of Torrens Island down to low water with exception to the land associated with the former quarantine station and the Torrens Island Power Station. The east side of the conservation park immediately adjoins the Barker Inlet-St Kilda Aquatic Reserve. The conservation park is reported as protecting ‘areas of mangrove forest, samphire shrubland and sand dune systems home to vulnerable and threatened species such as the Australasian bittern, the fairy tern and the white-bellied sea eagle’. The conservation park is classified as an IUCN Category III protected area.
Document 14: Torrens Island: Torrens Island is an island in the Australian state of South Australia located in the Port River Estuary between the Port River and Barker Inlet, about 15 km northwest of the state capital of Adelaide. Since European settlement of Adelaide in 1836, it has been used for a number of purposes.
Document 15: Onkaparinga River National Park: Onkaparinga River National Park is a protected area in the Australian state of South Australia located about 32 km south of Adelaide city centre. It extends over the floodplain of the Onkaparinga River east of Main South Road.
ground_truth: Port Adelaide River