Batang Ombilin, Batang Umbilin, Batang Oembilin, Batang Kuantan
|• location||West Sumatra|
It flows from Lake Singkarak in West Sumatra eastward to the east coast of Sumatra. It is called Batang Kuantan (Kuantan River) in the Kuantan Singingi Regency and the downstream until the river mouth at Strait of Malacca is called Batang Indragiri (Indragiri River).
The river flows in the central 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 22 °C. The warmest month is May, when the average temperature is around 24 °C, and the coldest is January, at 20 °C. The average annual rainfall is 3023 mm. The wettest month is November, with an average of 444 mm rainfall, and the driest is June, with 124 mm rainfall.
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- Rand McNally, The New International Atlas, 1993.
- Batang Umbilin at Geonames.org (cc-by); Last updated 2013-06-04; Database dump downloaded 2015-11-27
- Maatschappij-Belangen, 1875.
- 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.
- "NASA Earth Observations Data Set Index". NASA. 30 January 2016.
- "NASA Earth Observations: Rainfall (1 month - TRMM)". NASA/Tropical Rainfall Monitoring Mission. 30 January 2016.