Fortescue River - WA

The Fortescue River is an ephemeral river in the Pilbara region of Western Australia. It is the third longest river in the state.
The river rises near Deadman Hill in the Ophthalmia Range about 30 km south of Newman. The river flows in a northerly direction parallel with the Great Northern Highway until it crosses the highway just south of the Marble Bar turn-off. The river then runs north-west then west crossing the Great Northern Highway again, north of the Auski Roadhouse. Approximately 100 kilometres (62 mi) north of Newman, the river flows through the 960 square kilometres (371 sq mi) Fortescue Marsh, an important wetland. The river continues to head west crossing Highway 1 at the Fortescue Roadhouse and discharges into the Indian Ocean at Mardie Station about 40 km south-west of Dampier