Coordinates: 2°00′00″N 100°52′00″E / 2.0°N 100.86667°E / 2.0; 100.86667

Rokan River

From WikiProjectMed
Jump to navigation Jump to search
Rokan River
Sungai Rokan, Soengai Rekan
Map of the Rokan (left) and Indragiri rivers by Isaak de Graaf, circa 1690-1743.
Rokan River is located in Sumatra
Rokan River
Location of river mouth
Rokan River is located in Indonesia
Rokan River
Rokan River (Indonesia)
Location
CountryIndonesia
ProvinceRiau
Physical characteristics
Source 
 • locationBarisan Mountains
Mouth 
 • location
Malacca Strait
Length350 km (220 mi)
Basin size19,258 km2 (7,436 sq mi)[1]
Discharge 
 • locationRokan Delta, Bagansiapiapi, Malacca Strait
 • average(Period of data: 2009–2013)1,506 m3/s (53,200 cu ft/s)[1]
Basin features
Tributaries 
 • leftRokan-kanan River
 • rightRokan-kiri River

Rokan River is a river in Riau province, central-eastern Sumatra, Indonesia, about 1,100 km northwest of the capital Jakarta.[2][3]

Hydrology

The river originates in the Barisan Mountains in the west, and drains northeast-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).[4] 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.[5] 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.[6]

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. ^ Rand McNally, The New International Atlas, 1993.
  3. ^ Sungai Rokan at Geonames.org (cc-by); Last updated 2013-06-04; Database dump downloaded 2015-11-27
  4. ^ 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.
  5. ^ "NASA Earth Observations Data Set Index". NASA. 30 January 2016.
  6. ^ "NASA Earth Observations: Rainfall (1 month - TRMM)". NASA/Tropical Rainfall Monitoring Mission. 30 January 2016.

2°00′00″N 100°52′00″E / 2.0°N 100.86667°E / 2.0; 100.86667

Retrieved from "https://mdwiki.org/wiki/Rokan_River"