The Mirraparoo Creek has its headwaters the the ranges some 10-12 kilometers north. It flows to the south of the hill where the Communications Towers are situated, then turns north again and the Bulloo Development Road (Adventure Way) crosses the Mirraparoo Creek before it joins the Bulloo River a little to the north east of Eulo.
The area to the immediate north and south of the road here is called the Mirraparoo Creek floodway (Moonjaree Crossing), and it an important wetlands area during the infrequent wet seasons.
Non-perennial, temporary, intermittent, or ephemeral. All these terms describe rivers and wetlands that go dry. The vast majority of Australia's rivers fall under this category.
When completely dry, the wetland may only be evident as a depression of fine soil with a perimeter of sedges or reeds.
They have a fascinating ecology and life cycle, and you can read more about them here.