[1] It flows in the southeast region of the island, within the Negara District, province of South Kalimantan.

The river mouth is located on the border of Tapin Regency and Barito Kuala Regency, where the small city of Marabahan (historic name: Bandar Muara Bahan) is located.

[5] This area can be reached using the road connecting Banjarmasin and Balikpapan, through Kandangan and Amuntai.

The local people are mostly of the Banjar ethnic group, who have an interesting land use system that combines various rice types that grow on the surface (floating), water buffalo, and duck husbandry.

The people use this area to find wood, cut trees to make furniture, create farmlands, and engage in fishery and bird hunting.