[1] At its mouth, the river is tidal, and flows into the estuary through mangrove forests that extend south from Doualla to Point Souelaba.
[2] Near Douala, the river is crossed by a 370 metres (1,210 ft) T-section girder road bridge built of precast, prestressed concrete in 1983–1984.
[3] The Duala people, who today inhabit the region in and around the city of Douala, moved to their present-day location from Piti on the Dibamba river, displacing Bassa-Bakoko cultivators.
[5] The Dibamba was the scene of naval hostilities during World War I, when Commander Ralph Stuart Sneyd engaged and sank a large German launch on 10 September 1914, and drove the enemy out of their post at Piti.
[citation needed] Further inland, there are still some patches of permanent swamp forest on the river, but many others have been cleared and drained for oil palm plantation.