The Al-Misbah Mosque is located on the banks of the Karang Mumus river in Samarinda. It has a bridge connected to the Majelis Taklim Nurul Amin which is very well known among the people of Samarinda. Karang Mumus River is the name of the river that divides Samarinda City, East Kalimantan. The Karang Mumus River is a subsidiary of the Mahakam River which has a length of 34.7 kilometers in the Samarinda City area. The Karang Mumus River is one of the water transportation routes for residents who are in the Karang Mumus watershed & x28;DAS& x29;, besides that it is also a source of washing, bathing and other activities.