The Indragiri River is a river in

Sumatra Sumatra is one of the Sunda Islands of western Indonesia. It is the largest island that is fully within Indonesian territory, as well as the sixth-largest island in the world at 473,481 km2 (182,812 mi.2), not including adjacent i ...

, in the

Indonesia Indonesia, officially the Republic of Indonesia, is a country in Southeast Asia and Oceania between the Indian and Pacific oceans. It consists of over 17,000 islands, including Sumatra, Java, Sulawesi, and parts of Borneo and New Guine ...

province A province is almost always an administrative division within a country or sovereign state, state. The term derives from the ancient Roman ''Roman province, provincia'', which was the major territorial and administrative unit of the Roman Empire ...

Riau Riau is a province of Indonesia. It is located on the central eastern coast of Sumatra along the Strait of Malacca. The province shares land borders with North Sumatra to the northwest, West Sumatra to the west, and Jambi to the south. Accord ...

, about 800 km northwest of the capital

Jakarta Jakarta (; , bew, Jakarte), officially the Special Capital Region of Jakarta ( id, Daerah Khusus Ibukota Jakarta) is the capital and largest city of Indonesia. Lying on the northwest coast of Java, the world's most populous island, Jakarta ...

. It is formed from the union of the

Ombilin River The Ombilin River is a river in West Sumatra, Indonesia, about 900 km northwest of the capital Jakarta. Hydrology The river flows from Lake Singkarak in West Sumatra eastward to the east coast of Sumatra. It is called Batang Kuantan (Kuant ...

and the Sinamar River, and empties into the

Strait of Malacca The Strait of Malacca is a narrow stretch of water, 500 mi (800 km) long and from 40 to 155 mi (65–250 km) wide, between the Malay Peninsula (Peninsular Malaysia) to the northeast and the Indonesian island of Sumatra to the southwest, connec ...

. The middle part that flows in the

Kuantan Singingi Regency Kuantan Singingi is a regency (''kabupaten'') of Riau, Indonesia Indonesia, officially the Republic of Indonesia, is a country in Southeast Asia and Oceania between the Indian and Pacific oceans. It consists of over 17,000 islands, inclu ...

is called Batang Kuantan (Kuantan River).''Maatschappij-Belangen'', 1875.

Geography

The river flows in the eastern area of Sumatra with predominantly

tropical rainforest climate A tropical rainforest climate, humid tropical climate or equatorial climate is a tropical climate sub-type usually found within 10 to 15 degrees latitude of the equator. There are some other areas at higher latitudes, such as the coast of southea ...

(designated as ''Af'' in the Köppen-Geiger climate classification). The annual average temperature in the area is 23 °C. The warmest month is February, when the average temperature is around 24 °C, and the coldest is August, at 22 °C. The average annual rainfall is 2757 mm. The wettest month is November, with an average of 345 mm rainfall, and the driest is January, with 107 mm rainfall.

References

{{Authority control Rivers of Sumatra Rivers of Riau Rivers of Indonesia

Geography

See also

References