Ombilin River


Ombilin River is a river in West Sumatra, Indonesia, about 900 km northwest of the capital Jakarta.

Hydrology

It flows from Lake Singkarak in West Sumatra eastward to the east coast of Sumatra. It is called Batang Kuantan in the Kuantan Singingi Regency and the downstream until the river mouth at Strait of Malacca is called Batang Indragiri.

Geography

The river flows in the central area of Sumatra with predominantly tropical rainforest climate. The annual average temperature in the area is 22 °C. The warmest month is May, when the average temperature is around 24 °C, and the coldest is January, at 20 °C. The average annual rainfall is 3023 mm. The wettest month is November, with an average of 444 mm rainfall, and the driest is June, with 124 mm rainfall.