Rokan River

Rokan River is a river in Riau province, central-eastern Sumatra, Indonesia, about 1100 km northwest of the capital Jakarta.[1][2]

Rokan River
Sungai Rokan, Soengai Rekan
Map of the Rokan (left) and Indragiri rivers by Isaak de Graaf, circa 1690-1743.
Location of river mouth
Rokan River (Indonesia)
Location
CountryIndonesia
ProvinceRiau
Physical characteristics
Source 
 • locationBarisan Mountains
Mouth 
 • location
Malacca Strait
Length350 km (220 mi)
Basin features
Tributaries 
 • leftRokan-kanan River
 • rightRokan-kiri River

Hydrology

The river sourced from the Barisan Mountains in the west, and drained north-east-ward along Rokan Hulu Regency and Rokan Hilir Regency with estuarine located near the port town of Bagansiapiapi draining the water to Malacca Strait.

Tributaries include the Rokan-kiri River, Rokan-kanan River, Kumu River.

Geography

The river flows in the central area of Sumatra with 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 March, when the average temperature is around 24 °C, and the coldest is January, at 22 °C.[4] The average annual rainfall is 3766 mm. The wettest month is November, with an average of 336 mm rainfall, and the driest is July, with 113 mm rainfall.[5]

See also

References
  1. Rand McNally, The New International Atlas, 1993.
  2. Sungai Rokan at Geonames.org (cc-by); Last updated 2013-06-04; Database dump downloaded 2015-11-27
  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 (5): 1633–1644. Bibcode:2007HESS...11.1633P. 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.

This article is issued from Wikipedia. The text is licensed under Creative Commons - Attribution - Sharealike. Additional terms may apply for the media files.