The River Torrens, also known by its Kaurna name Karrawirra Parri, is the most significant river of the Adelaide Plains in South Australia. It flows 85 kilometres from its source in the Mount Lofty Ranges near Mount Pleasant, at an elevation of 480 metres, across the Adelaide Plains, through the Adelaide city centre, and empties into Gulf St Vincent at Henley Beach South. The river's watershed covers 508 square kilometres and it has an average discharge of 0.71 cubic metres per second at its mouth. Historically the heartland of the Kaurna people, the river is now a highly modified and regulated system featuring a series of five major weirs and the Kangaroo Creek Reservoir, which supplies part of Adelaide's water.