Stabilization of the Tutong River Entrance, Brunei: A Comprehensive Coastal Engineering Project

The Tutong River entrance on the Brunei coastline, presents navigational problems due to a sandbar obstructing the majority of the channel. While the existing western training wall is damaged, the eastern training wall is filled to capacity by the predominant westward littoral drift of sand. The Water Research Laboratory (WRL) of the University of New South Wales has provided specialist advice in the engineering design of the Tutong River training works for the stabilisation of the river mouth. In this paper, we present the different studies undertaken including: 1. the field data collection undertaken on the Tutong River estuary; 2. the sediment transport assessment and littoral drift modelling; 3. the hydrodynamic modelling of the lower Tutong River estuary; 4. the physical modelling of the proposed training walls for armour stability and wave penetration.