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Barumun River

Field	Value
name	Barumun
name_other	Sungai Barumun, Aek Baroemoen
pushpin_map	Indonesia Sumatra#Indonesia
pushpin_map_size	285
pushpin_map_caption	Location of river mouth
source1_location	Siraisan, Padang Lawas, North Sumatra
mouth_location	Malacca Strait
subdivision_type1	Country
subdivision_name1	Indonesia
length	440 km
source1_elevation	1,500 m
mouth_elevation	0 m
discharge1_location	Near mouth
discharge1_avg	(Period: 2003–2015)544.1 m3/s
(Period: 2006–2010){{cvt	824.45	m3/s	abbr	on}}
river_system	Barumun River
basin_size	13,383.86 km2
<!--source1_coordinates	0°56'19.1"N 99°41'16.8"E	mouth_coordinates=2°40'02.3"N 100°06'33.4"E--

(Period: 2006–2010)824.45 m3/s |}} Barumun River is a Sumatran river that begins in Siraisan, Padang Lawas Regency in the southeastern North Sumatra, Indonesia, about 1,200 km northwest of the capital Jakarta.

Hydrology

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

The largest town on the Barumun is Kotapinang, the administrative capital of South Labuhan Batu Regency, with a population of 70,507 people in mid 2024, while the largest town in the Barumun River basin is Rantau Prapat (in Labuhan Batu Regency), which is located on the Bilah tributary with a population of 180,540 according to the official estimates as at mid 2024. It is the largest river in Sumatra with a length of 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). 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. 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.

References

(Nov 2017). "Computation of surface water availability in Indonesia based on satellite data". Jurnal Sumber Daya Air.
"Sumatra".
Rand McNally, ''The New International Atlas'', 1993.
[http://www.geonames.org/1649927/sungai%20barumun.html Sungai Barumun] at Geonames.org (cc-by); Last updated 2013-06-04; Database dump downloaded 2015-11-27
Badan Pusat Statistik, Jakarta, 28 February 2025, ''Kabupaten Labuhanbatu Dalam Angka 2025'' (Katalog-BPS 1102001.1207)
(). "Updated world map of the Köppen-Geiger climate classification". Hydrology and Earth System Sciences.
(30 January 2016). "NASA Earth Observations Data Set Index". NASA.
(30 January 2016). "NASA Earth Observations: Rainfall (1 month - TRMM)". NASA/Tropical Rainfall Monitoring Mission.

Wikipedia Source

This article was imported from Wikipedia and is available under the Creative Commons Attribution-ShareAlike 4.0 License. Content has been adapted to SurfDoc format. Original contributors can be found on the article history page.

rivers-of-north-sumatra barumun-bilah-basin

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