Rokan-kiri River
Rokan-kiri River is a river in Riau province, central part of Sumatra island, Indonesia, about 1100 km northwest of the capital Jakarta.
It is a tributary of the Rokan River.Geography
The river flows in the central area of Sumatra with predominantly tropical rainforest climate. 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. The average annual rainfall is 2742 mm. The wettest month is November, with an average of 401 mm rainfall, and the driest is June, with 85 mm rainfall.