Rajang River

Rajang Rejang, 拉让江
The Rajang drainage basin
Nickname(s)	Swan river (Chinese community)
Location
Country	Malaysia
State	Sarawak
Physical characteristics
Source	Iran Mountains
• location	Malaysia
• elevation	2,074 m (6,804 ft)
Mouth
• location	South China Sea, Malaysia
• elevation	0 m (0 ft)
Length	770 km (480 mi)
Basin size	50,707 km2 (19,578 sq mi)[1]
Depth
• minimum	2
• maximum	45
Discharge
• location	Rajang Delta, South China Sea
• average	3,600 m3/s (130,000 cu ft/s)[2] (Period of data: 2003-2016)4,715 m3/s (166,500 cu ft/s)[3] 124.826 km3/a (3,955.5 m3/s)
• minimum	1,000 m3/s (35,000 cu ft/s)[2]
• maximum	6,000 m3/s (210,000 cu ft/s)[2] 25,000 m3/s (880,000 cu ft/s)
Discharge
• location	Kapit, Malaysia (Basin size: 34,053 km2 (13,148 sq mi))
• average	(Period of data: 1983-1990)2,510 m3/s (89,000 cu ft/s)[1]
• minimum	305 m3/s (10,800 cu ft/s)[1]
• maximum	10,799 m3/s (381,400 cu ft/s)[1]
Discharge
• location	Sibu, Malaysia (Basin size: 43,550.5 km2 (16,814.9 sq mi)[3]
• average	(Period of data: 1992-2016)3,355 m3/s (118,500 cu ft/s)[3][4]
Basin features
Tributaries
• left	Belaga
• right	Baleh, Balui, Katibas

The Rajang River (Malay: Batang Rajang) is a river in Sarawak, northwestern Borneo, Malaysia. The river originates in the Iran Mountains, flows through Kapit, and then towards the South China Sea. At approximately 565 km long (351 mi), the river is the seventh-longest in Borneo and the longest in Malaysia.^[5][6]

Malaysia's largest and tallest (160m) hydro electric project, the Bakun Hydro Electric Dam, is located on the Balui River, a tributary of the Rajang.^[7] Other important tributaries include the Katibas River, Ngemah River, Iran River, Pila River, Balleh River, Bangkit River and the Kanowit River.^[5]