Complex sentence: The headwaters of the river rise south of Mount Angelo, approximately 25 km south of Halls Creek, the river then flows in a westerly direction through Oollumarra Soak and discharges into Margaret River of which it is a tributary.
Split into simpler sentences: The headwaters of the river rise south of Mount Angelo, approximately 25 km south of Halls Creek. The river then flows in a westerly direction through Oollumarra Soak and discharges into Margaret River of which it is a tributary.