The Mahakam River is in Indonesia. It flows 980 km from the district of Long Apari in the highlands of Borneo, to its mouth at the Makassar Strait.The city of Samarinda, the provincial capital of East Kalimantan, lies along the river 48 km (30 mi) from the river mouth.The delta Mahakam river consist of specific micro climate which is influenced by high and low tide at sea level.