In Sarawakian Malay, a major river is named Batang (meaning "trunk" or "tree" in Malay) as it is the main larger stream which took its "root" from … 展开

The population of the Rajang basin was very low in the 19th century during the Bruneian Empire. The people living along the river's banks traded with Malays from Brunei. At that time, the … 展开

The major economic activity in the upper reaches of the Rajang River is logging. Among the types of wood that are extracted for exports are Ramin, plywood, Kapur, 展开

Logging operations are rampant on the upstream of the Rajang river. A major study conducted along the Rajang river from May to December 2004 found that the main channel of the … 展开

The Rajang is the longest river system in Malaysia, with its source in the Nieuwenhuis mountains, where it forms the political boundary … 展开

Mammals
Thirty species of mammals were recorded along the Rajang basin by a study of 2004. The mouth of the river is the only place where the dolphins can be sighted. Totally protected mammals include gibbon, langurs, 展开

The town of Sibu can be assessed by oceangoing vessels for 80 miles (130 km), while an additional 100 miles (160 km) of the river can be assessed by shallow-draft craft. The remaining parts of the river, leading into the Sarawak interior, can only be assessed by small … 展开