Sediment Plume from De Grey River, Australia20.3S 118.5E
The De Grey River is a river located in the Pilbara region of Western Australia. It rises south of Callawa at the confluence of the Oakover and the Nullagine rivers and flows in a west-north-westerly direction eventually discharging into the Indian Ocean via Breaker Inlet about 80 km north-east of Port Hedland.
Its stream bed is 100 to 130 metres wide, dry throughout most of the year. Here, however, due to rainfall associated with Tropical Cyclone Rusty (17S), much water was present in the river, carrying with it great loads of sediment. Here, that sediment can be seen emptying into the Indian Ocean and creating a greenish blue plume that extends far offshore.