Torrens Island Sanctuary which overlays the entire island. 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 northwest of the state capital of Adelaide. Since European settlement of Adelaide in 1836, it has been used for a number of purposes. Being uninhabited, an island, adjacent to Port Adelaide, and near Outer Harbor, Torrens Island was initially used as the site of a Quarantine Station for new arrivals (by sea) to South Australia. One example of its use was during the so-called "Boonah crisis".
Torrens Island to commission the new station during the first quarter of 2019, Torrens Island has been located within the boundaries of the following protected areas to varying extents since 1963, 1973 and 2005 respectively – the Torrens Island Conservation Park which covers all of the island down to low water with exception to the most of land associated with the former quarantine station and the land associated with the Quarantine Power Station and Torrens Island Power Stations, the Barker Inlet-St Kilda Aquatic Reserve which covers all of the east side of the island located below high water and the Adelaide Dolphin