The Poso is a river of Central Sulawesi on Sulawesi island, Indonesia, about 1600 km northeast of the capital Jakarta.Koro Poso at Geonames.org (cc-by); Last updated 2013-06-04; Database dump downloaded 2015-11-27 The Poso is approximately 100 km long and flows from Lake Poso, about 2 km west of the town of Tentena to the city of Poso and then into the Gulf of Tomini.Indonesia Handbook
Geography The river flows in the central area of Sulawesi with predominantly tropical rainforest climate (designated as Af in the Köppen-Geiger climate classification). The annual average temperature in the area is . The warmest month is October, when the average temperature is around , and the coldest is January, at . The average annual rainfall is . The wettest month is December, with an average of rainfall, and the driest is September, with a rainfall.
See also List of drainage basins of Indonesia List of rivers of Indonesia List of rivers of Sulawesi
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