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Mendawai River
Soengai Katingin, Soengai Mendawei, Soengai Ketingan, Mendawi, Soengai Katingan
Mendawai River; Soengai Katingin, Soengai Mendawei, Soengai Ketingan, Mendawi, Soengai Katingan
	Mendawai and other rivers in Central Kalimantan
Native name	Sungai Mendawai (Indonesian)
Location
Country	Indonesia
Province	Central Kalimantan
Physical characteristics
Source	Schwaner Mountains
Mouth	Java Sea
• location	Pagatan
• coordinates	3°5.1242′S 113°18.6542′E / 3.0854033°S 113.3109033°E
Length	616 km (383 mi)
Basin size	19,500 km2 (7,500 sq mi)
Discharge
• location	Katingan Kuala (Katingan Regency), Java Sea (near mouth)
• average	1,414 m3/s (49,900 cu ft/s)
Discharge
• location	Kasongan
• average	1,279 m3/s (45,200 cu ft/s)
Basin features
River system	Katingan basin (DAS320369)

Mendawai River or Katingan River is a river of Borneo, it is located in Central Kalimantan, Indonesia. With a total length of 616 km (383 mi).^[4]^[5] The longhouses of the Pendahara are located along the river in its upper course. The river has its source in the Schwaner Mountain Range.^[6]

Geography

The river flows in the southeast area of Borneo with predominantly tropical rainforest climate (designated as Af in the Köppen-Geiger climate classification).^[7] The annual average temperature in the area is 22 °C. The warmest month is September, when the average temperature is around 24 °C, and the coldest is December, at 20 °C.^[8] The average annual rainfall is 2991 mm. The wettest month is December, with an average of 476 mm rainfall, and the driest is September, with 75 mm rainfall.^[9]