Barumun River

Barumun River is a Sumatran river that begins in Siraisan, Padang Lawas Regency in the southeastern North Sumatra, Indonesia, about 1200 km northwest of the capital Jakarta.[1][2]

Barumun
Sungai Barumun, Aek Baroemoen
Location of river mouth
Barumun River (Indonesia)
Location
CountryIndonesia
Physical characteristics
Source 
 • locationSiraisan, Padang Lawas, North Sumatra
 • elevation1500 m
Mouth 
 • location
Malacca Strait
 • elevation
0 m
Length440 km (270 mi)

Hydrology

The river flows northward through North Padang Lawas, South and Labuhan Batu Regency before it reaches Sumatra east coast with its estuary in Malacca Strait.

The largest city on the Barumun is Kotapinang, South Labuhan Batu, with a population of 54.000 people. While the largest city in the Barumun basin is Rantau Prapat, which is located on the Bilah with a population of 164.000 people. It is the largest river in Sumatra with length at about 440 km.

Tributaries include the Bilah, Kanan, Batang Pane, Sihapas and Aek Sangkilon. All tributaries of Barumun River are sourced from mountainous areas along Barisan Mountains.

Geography

The river flows in the northern area of Sumatra with predominantly tropical rainforest climate (designated as Af in the Köppen-Geiger climate classification).[3] The annual average temperature in the area is 23 °C. The warmest month is May, when the average temperature is around 25 °C, and the coldest is January, at 22 °C.[4] The average annual rainfall is 2801 mm. The wettest month is November, with an average of 381 mm rainfall, and the driest is March, with 126 mm rainfall.[5]

See also

References
  1. Rand McNally, The New International Atlas, 1993.
  2. Sungai Barumun at Geonames.org (cc-by); Last updated 2013-06-04; Database dump downloaded 2015-11-27
  3. Peel, M C; Finlayson, B L; McMahon, T A (2007). "Updated world map of the Köppen-Geiger climate classification". Hydrology and Earth System Sciences. 11 (5): 1633–1644. Bibcode:2007HESS...11.1633P. doi:10.5194/hess-11-1633-2007. Retrieved 30 January 2016.
  4. "NASA Earth Observations Data Set Index". NASA. 30 January 2016.
  5. "NASA Earth Observations: Rainfall (1 month - TRMM)". NASA/Tropical Rainfall Monitoring Mission. 30 January 2016.

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