Mandau River is a river in Riau province of central Sumatra island, Indonesia, about 1,000 km northwest of the capital Jakarta.Rand McNally, The New International Atlas, 1993.Sungai Mandau at Geonames.org (cc-by); Last updated 2013-06-04; Database dump downloaded 2015-11-27 It is a tributary of the Siak River.
Geography The river flows in the central area of Sumatra which has a predominantly tropical rainforest climate (designated as Af in the Köppen-Geiger climate classification). 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 2899 mm. The wettest month is November, with an average of 403 mm rainfall, and the driest is June, with 115 mm of rain.
See also List of drainage basins of Indonesia List of rivers of Indonesia List of rivers of Sumatra
References