Rokan-kiri River
![Rokan-kiri River is located in Sumatra](http://upload.wikimedia.org/wikipedia/commons/thumb/6/6d/Indonesia_Sumatra_relief_location_map.jpg/285px-Indonesia_Sumatra_relief_location_map.jpg)
![Rokan-kiri River](http://upload.wikimedia.org/wikipedia/commons/thumb/0/0c/Red_pog.svg/8px-Red_pog.svg.png)
![Rokan-kiri River is located in Indonesia](http://upload.wikimedia.org/wikipedia/commons/thumb/9/94/Indonesia_relief_location_map.jpg/285px-Indonesia_relief_location_map.jpg)
![Rokan-kiri River](http://upload.wikimedia.org/wikipedia/commons/thumb/0/0c/Red_pog.svg/8px-Red_pog.svg.png)
Rokan-kiri River is a river in Riau province, central part of Sumatra island, Indonesia, about 1,100 km northwest of the capital Jakarta.[1][2] It is a tributary of the Rokan River.
Geography
The river flows in the central area of Sumatra, which has a 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 August, when the average temperature is around 24 °C, and the coldest is January, at 22 °C.[4] The average annual rainfall is 2742 mm. The wettest month is November, with an average of 401 mm of rainfall, and June is the driest, with 85 mm of rain.[5]
See also
References
- ^ Rand McNally, The New International Atlas, 1993.
- ^ Sungai Rokan Kiri at Geonames.org (cc-by); Last updated 2013-06-04; Database dump downloaded 2015-11-27
- ^ 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.
1°23′44″N 100°56′04″E / 1.39555°N 100.93458°E / 1.39555; 100.93458