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Indragiri River

Indragiri River
Kuantan River, Batang Indragiri, Sungai Indragiri, Soengai Inderagiri, Batang Inderagiri, Batang Kuantan, Batang Koeantan, Sungai Kuatan, Koentan, Sungai Batangkuantan
Map of the Rokan and Indragiri (right) rivers by Isaak de Graaf, circa 1690-1743.
Indragiri River is located in Sumatra
Indragiri River
Location of river mouth
Indragiri River is located in Indonesia
Indragiri River
Indragiri River (Indonesia)
Location
CountryIndonesia
Physical characteristics
SourceOmbilin River, Sinamar River
 • locationWest Sumatra
MouthStrait of Malacca
 • location
Riau
Length500 km (310 mi)
Basin size17,968 km2 (6,937 sq mi)[1]
Discharge 
 • locationIndragiri Delta, Malacca Strait
 • average(Period of data: 2009–2013)1,339 m3/s (47,300 cu ft/s)[1]

The Indragiri River is a river in Sumatra, in the Indonesian province of Riau, about 800 km northwest of the capital Jakarta.[2][3] Formed by the union of the Ombilin River and the Sinamar River, the Indragiri empties into the Strait of Malacca. The middle part that flows in the Kuantan Singingi Regency is called Batang Kuantan (Kuantan River).[4]

Geography

The river flows in the eastern area of Sumatra with predominantly tropical rainforest climate (designated as Af in the Köppen-Geiger climate classification).[5] The annual average temperature in the area is 23 °C. The warmest month is February, when the average temperature is around 24 °C, and the coldest is August, at 22 °C.[6] The average annual rainfall is 2757 mm. The wettest month is November, with an average of 345 mm rainfall, and the driest is January, with 107 mm rainfall.[7]

See also

References

  1. ^ a b Francisca, Wit; Tim, Rixen; Antje, Baum; Widodo, S. Pranowo; Andreas, A. Hutahaean (2018). The Invisible Carbon Footprint as a hidden impact of peatland degradation inducing marine carbonate dissolution in Sumatra, Indonesia.
  2. ^ Batang Indragiri at Geonames.org (cc-by); Last updated 2013-06-04; Database dump downloaded 2015-11-27
  3. ^ Kosuke Mizuno, Motoko S. Fujita & Shuichi Kawai (2016). Catastrophe and Regeneration in Indonesia's Peatlands: Ecology, Economy and Society. NUS Press. p. 166. ISBN 978-98-147-2209-4.
  4. ^ Maatschappij-Belangen, 1875.
  5. ^ 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.
  6. ^ "NASA Earth Observations Data Set Index". NASA. 30 January 2016. Archived from the original on 11 May 2020. Retrieved 10 January 2019.
  7. ^ "NASA Earth Observations: Rainfall (1 month - TRMM)". NASA/Tropical Rainfall Monitoring Mission. 30 January 2016. Archived from the original on 19 April 2019. Retrieved 10 January 2019.

0°22′S 103°26′E / 0.367°S 103.433°E / -0.367; 103.433

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Indragiri River
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