Seruyan River

Pembuang River or Seruyan River is a river of Borneo, Indonesia.^[4] The river has its source near Bikit Tikung (1,175 metres) in the Schwaner Mountain Range.^[5] The eastern side of the river contains dense forest down to Sembulu (Belajau) lakes and is said to be a major habitat of the orangutan.^[5] Pembuang means "place of rejection".^[6]

Pembuang River Sungai Seruyan, Soengai Saroejan, Soengai Pemboeang, Soengai Seroejan
Pembuang River mouth
Native name	Sungai Pembuang (Indonesian)
Location
Country	Indonesia
Province	Central Kalimantan
Physical characteristics
Source
• location	Bikit Tikung, Schwaner Mountain Range
Mouth
• location	Java Sea
• coordinates	3°22′40.87″S 112°32′25.86″E
Length	350 km (220 mi)
Basin size	12,911 km2 (4,985 sq mi)[1]
Discharge
• location	Java Sea (near mouth)
• average	1,216 m3/s (42,900 cu ft/s)
Discharge
• location	Pembuang (Basin size: 7,554 km2 (2,917 sq mi)[2]
• average	723 m3/s (25,500 cu ft/s)[3]

Pembuang

Main mouth to Java Sea

Pembuang River in Kalimantan

Geography

The river flows in the middle to the south of Borneo island with predominantly tropical rainforest climate (designated as Af in the Köppen-Geiger climate classification).^[7] The annual average temperature in the area is 24 °C. The warmest month is November, when the average temperature is around 26 °C, and the coldest is February, at 23 °C.^[8] The average annual rainfall is 3118 (2971-3480) mm. The wettest month is December, with an average of 491 mm rainfall, and the driest is September, with 67 mm rainfall.^[9]

Hydrology

The Seruyan River (previously named Seroejan) is a river that crosses and flows in the Seruyan Regency, Central Kalimantan province, Indonesia. The river flows from north to south and empties into the Java Sea has a length of 350 Km and a navigable 300 Km through several cities, an average depth of 6 m and an average width of 300 m.

A number of its tributaries:

• Sembuluh Lake River

• Salau River

• Pukun River

• Kalua River

• Lanan River

• Bai River

See also

• List of drainage basins of Indonesia
• List of rivers of Indonesia
• List of rivers of Kalimantan