Torrens Island, South Australia it passes through the Torrens Island Power Station, public access is restricted. 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 north-west of the Adelaide city centre. Its boundaries which were created in August 2009 include “the whole of the geographical feature of Torrens Island” and parts of the following water bodies that adjoin the shoreline of the ‘geographic feature’ - the Port River to the west, the Angas Inlet to the south and the Barker Inlet to the
River Torrens after him. In 1867, prison labour from Adelaide Gaol was used to build a wooden dam near the site of the current weir. The dam was poorly constructed and almost immediately the Torrens washed it away. Construction of a permanent concrete weir was begun in November 1880 and completed, at a cost of £7,000, in 1881. The sluice gates were closed to begin filling the Torrens Lake on 1 July 1881. At the lake's official opening on 21 July 1881 an estimated 40,000, almost the entire population of Adelaide, attended. During the 1889 flood, the weir was overwhelmed, its gates