Rokan River

LocationCountryIndonesiaProvinceRiauPhysical characteristicsSource  • locationBarisan Mountains Mouth Malacca StraitLength350 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 featuresTributaries  • 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

• List of drainage basins of Indonesia
• List of rivers of Indonesia
• List of rivers of Sumatra

References

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