The Riverina is drained by the large Murray-Darling Basin. Rivers and streams in the Riverina generally flow east to west. As well as the Murray, Murrumbidgee and Lachlan, other streams include Billabong Creek and the Edward River, an anabranch of the Murray. Much of the water carried by these streams is taken out for other uses. In 2001–2002, 52% of the Murray and Murrumbidgee water was taken, with 77% of that water used for irrigation.