The footprint of the Yanco Creek System (YCS) follows the Yanco, Colombo and Forest Creeks, as well as the regulated section of the Billabong Creek (below Cocketegdong). The YCS commences at the confluence of the Murrumbidgee River and the Yanco Creek. The system runs in a westerly direction until the Billabong Creek flows into the Edward River. The system connects the Murrumbidgee River to the Murray River.