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Mahakam River at Mouth in Makassar Strait

0.5S 117.1E

July 29th, 2009 Category: Rivers

Indonesia - July 12th, 2009

Indonesia - July 12th, 2009

The Mahakam River is the largest river in East Kalimantan, Indonesia, with a catchment area of about 77,000 km2 and a length of 980 km.

On its way from the highlands of Borneo to its mouth in Makassar Strait, the Mahakam passes by the city of Samarinda, the provincial capital of East Kalimantan.

The Mahakam originates in the Muller mountain ranges where it flows south-eastwards, meeting the River Kedang Pahu at the city of Muara Pahu. From there the river meanders eastward through the Mahakam lakes region, which represents an extremely flat tropical lowland area surrounded by peat land.

Further downstream, the Mahakam meets three other main tributaries (River Belayan, Kedang Kepala, and Kedang Rantau) and flows south-eastwards through the Mahakam delta distributaries, towards the Makassar Strait.

The land in this orthorectified image is mostly flat, with some rows of hills running vertically. Some plots used for agriculture can be seen on the delta by the rivermouth. Ecologically, the river is important as it hosts rare water birds and the Irrawaddy dolphin.

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