Port River

The Port River (34°45′S 138°30′E / 34.75°S 138.5°E / -34.75; 138.5) is the western branch of the largest tidal estuary on the eastern side of Gulf St Vincent. It extends inland through the historic Inner Harbour of Port Adelaide, to the constructed salt-water West Lakes in the north-western suburbs of Adelaide, the capital of South Australia. The lower reaches of the Port River flow between the Lefevre Peninsula, and the Section Bank and Torrens Island, and form the sea entrance to the port facilities of Adelaide, and connect to the Barker Inlet to the east via the North Arm and Angas Inlet which surround Garden Island. Before European settlement of Adelaide's western suburbs and the construction of various flood mitigation channels and levees, the Port River formed one of the outlets of the River Torrens.

The banks of the river are largely industrialised and have some of Adelaide’s wharves, bulk cargo and container handling facilities, although there are some remnant mangroves. One of its main attractions other than transport is the Port River dolphins, which are the only wild dolphins in the world that live within a city.

Besides shipping using the river’s main channel, a fishing fleet operates out of the North Arm which also has a speed boat club. Recreational boating marinas are located in the Angas Inlet and on the Lefevre Peninsula.. The ASC (formerly the Australian Submarine Corporation) has its construction and maintenance facility and dock at Osborne, and there is a heritage-listed former Quarantine Station on Torrens Island. Several power stations including the Torrens Island Power Station and the Pelican Point Power Station, draw seawater from the Port River for cooling purposes. The Port Adelaide Rowing Club has rowed on the river for one hundred and thirty years, and the river was formerly a frequent venue for the Intervarsity eights race.