The Baram River ( ms, Sungai Baram) is a river in

Sarawak Sarawak (; ) is a state of Malaysia. The largest among the 13 states, with an area almost equal to that of Peninsular Malaysia, Sarawak is located in northwest Borneo Island, and is bordered by the Malaysian state of Sabah to the northeast, ...

on the island of

Borneo Borneo (; id, Kalimantan) is the third-largest island in the world and the largest in Asia. At the geographic centre of Maritime Southeast Asia, in relation to major Indonesian islands, it is located north of Java, west of Sulawesi, and ea ...

. The river originates in the

Kelabit Highlands The Kelabit Highlands are a mountain range located in the northernmost part of Sarawak, Malaysia in the Miri Division. It hosts the Bario village. The highest mountains in this range are Mount Murud at , Bukit Batu Buli at , and Bukit Batu Law ...

, a watershed demarcated by the Iran Mountains of

East Kalimantan East Kalimantan ( Indonesian: ) is a province of Indonesia. Its territory comprises the eastern portion of Borneo. It had a population of about 3.03 million at the 2010 census (within the current boundary), 3.42 million at the 2015 census, and ...

, which form a natural border with

. The river flows westwards through

tropical rainforest Tropical rainforests are rainforests that occur in areas of tropical rainforest climate in which there is no dry season – all months have an average precipitation of at least 60 mm – and may also be referred to as ''lowland equat ...

to the

South China Sea The South China Sea is a marginal sea of the Western Pacific Ocean. It is bounded in the north by the shores of South China (hence the name), in the west by the Indochinese Peninsula, in the east by the islands of Taiwan and northwestern P ...

. The Baram River terminates in a delta, which is subdivided into two units: East Barma Delta of Middle-Late

Miocene The Miocene ( ) is the first geological epoch of the Neogene Period and extends from about (Ma). The Miocene was named by Scottish geologist Charles Lyell; the name comes from the Greek words (', "less") and (', "new") and means "less recent ...

age and West Baram Delta of Late Miocene-

Quaternary The Quaternary ( ) is the current and most recent of the three periods of the Cenozoic Era in the geologic time scale of the International Commission on Stratigraphy (ICS). It follows the Neogene Period and spans from 2.58 million yea ...

age. The western unit is composed of

mudstone Mudstone, a type of mudrock, is a fine-grained sedimentary rock whose original constituents were clays or muds. Mudstone is distinguished from '' shale'' by its lack of fissility (parallel layering).Blatt, H., and R.J. Tracy, 1996, ''Petrology. ...

s enriched in organic components (

total organic carbon Total organic carbon (TOC) is the amount of carbon found in an organic compound and is often used as a non-specific indicator of water quality or cleanliness of pharmaceutical manufacturing equipment. TOC may also refer to the amount of organic c ...

content is more than 1.0 wt.%) which constitute substantial oil and gas reserves. The Baram river basin has been part of Sarawak since it was ceded to the

White Rajah The White Rajahs were a dynastic monarchy of the British Brooke family, who founded and ruled the Raj of Sarawak, located on the north west coast of the island of Borneo, from 1841 to 1946. The first ruler was Briton James Brooke. As a reward ...

by the then sultan of Brunei in 1882, an area of some , for a perpetual annual payment of 6000 dollars.The Pagan Tribes of Borneo, retrieved 22-05-2007
The river is crossed not far from its mouth by the Miri-Baram Highway, Federal Route , on the Batang Baram Bridge opened in 2003. Some 100 km upstream lies the town of

Marudi Marudi is a town in the Malaysian state of Sarawak, and is a part of the division of Miri. It is the seat of Marudi District, and is located on the banks of Baram River, about upstream from the river mouth. Marudi was the administrative centr ...

Etymology

''Batang'' (meaning "trunk" in Malay) is the name used for the main river in the river system such as "Batang Baram" (Baram river). For upriver areas, such as the areas surrounding the headwaters, the place is named as "Ulu" (which means "upriver"). For example, "Ulu Baram" is the upriver part of the Baram river. "Long" meaning "confluence" is used by the

Orang Ulu Orang Ulu ("people of the interior" in Malay) is an ethnic designation politically coined to group together roughly 27 very small but ethnically diverse tribal groups in northeastern Sarawak, Malaysia with populations ranging from less than 300 p ...

(upriver people). It is used to name the places located at the confluence between the smaller tributaries and the major river, same way as the Malay usage of the name "Kuala" (meaning river delta). The name "Pa'" (meaning "village") is exclusively used in the

such as " Pa Umor" village in Bario.

References

External links

Sarawak government websiteWWF Heart of Borneo conservation initiative
{{Coord, 4, 35, 18, N, 113, 58, 13, E, name=South China Sea-Baram, display=title Rivers of Sarawak Rivers of Malaysia