Buni River

Buni River (Indonesian: Ci Buni, Sungai Cibuni) is a river in southern West Java, Indonesia. The 109-km-long river flows in the Bandung and Cianjur regencies, with the upstream at the west slope of Mount Patuha and discharge into the Indian Ocean.[1][2]

Buni River
Cibuni, Tjibuni
Location of Buni River ("Ci Buni") in Java, Indonesia.
Buni River (Indonesia)
Native nameCi Buni
StateWest Java
RegionCianjur Regency, Bandung Regency
Physical characteristics
  locationMount Patuha, West Java, Indonesia
  elevation2,200 m (7,200 ft)
Indian Ocean, Sindangbarang, Indonesia
Length109 km (68 mi)


The river flows in the southwest area of Java with predominantly tropical rainforest climate (designated as Af in the Köppen-Geiger climate classification).[3] The annual average temperature in the area is 18 °C. The warmest month is October, when the average temperature is around 20 °C, and the coldest is August, at 18 °C.[4] The average annual rainfall is 3766 mm. The wettest month is December, with an average of 570 mm rainfall, and the driest is September, with 89 mm rainfall.[5]


Ci Buni is the main river in the watershed area (Indonesian: Daerah Aliran Sungai) Cibuni with a total area of 1,434.70 km2 comprising three regencies: Cianjur Regency, Bandung Regency and Sukabumi Regency. The upstream is located in Rancabali of Bandung Regency, then it flows to the southwest direction to Pasirkuda, Tanggeung, Kadupandak, and Agrabinta (all in Cianjur Regency) then turns to the southeast passing Sindangbarang, Cianjur, into Indian Ocean at the south coast of Java.[6] The main tributaries of Ci Buni are:

  1. Cijampang
  2. Cilumut
  3. Cibangoah
  4. Cidolog
  5. Cikarang
  6. Cibalapulang

With the high rainfall between 2239 mm to 5579 mm, the river has high debit and large watershed area for the population to be the source of drinking water, irrigation and washing.[6] Along the stream is a topical forest with diverse plants, fish, birds, boars, apes, wild cats and reptiles.[7] Closer to the ocean, the river mouth widens to almost 200 m and hosts sweet water crocodiles.[7]

See also


  1. Ci Buni at Geonames.org (cc-by); Last updated 2013-06-04; Database dump downloaded 2015-11-27
  2. Rand McNally, The New International Atlas, 1993.
  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: 1633–1644. 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.
  6. Dwi Kurnia Adi Yuda. Kajian Pembangunan Waduk Cibuni Sebagai Upaya Pemenuhan Kebutuhan Air Baku Di Wilayah Kabupaten Cianjur Bagian Selatan. JBPTITBPP. 2009.
  7. Flora and Fauna of Cibuni

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