Hydrodynamics modelling of a river with mangrove forests

A. H. Abu Hanipah, Z. R. Guo, E. S.M. Mahmoud Zahran

Research output: Chapter in Book/Conference proceedingConference contributionpeer-review


The existence of mangroves produces high resistance to flow which affects water level and current in rivers. For this reason, it is crucial to consider the flow resistance factor associated with mangrove vegetation in river hydrodynamic models. This paper describes the numerical simulation of hydrodynamics of the Brunei River, a tidal river with extensive mangrove intertidal zones using MIKE 21 based on two different model representations of mangroves: 1) a model applying spatial Manning’s m coefficient between cells enclosing mangroves and main river, and 2) a model applying uniform Manning’s m coefficient which indicates the absence of mangroves. The calibration and verification mean absolute error (MAE) results indicate that the model with varying resistance distribution captures satisfactorily the water levels and current patterns of the Brunei River covered with mangroves. Based on these findings, the hydrodynamics are properly understood within the Brunei River and the calibrated model can be coupled with water quality modelling to assess water quality of a river with mangrove forests.

Original languageEnglish
Title of host publicationIET Conference Publications
PublisherInstitution of Engineering and Technology
ISBN (Electronic)9781785618161, 9781785618437, 9781785618468, 9781785618871, 9781785619427, 9781785619694, 9781785619915, 9781839530029, 9781839530036
ISBN (Print)9781785617911
Publication statusPublished - 2018
Externally publishedYes
Event7th Brunei International Conference on Engineering and Technology 2018, BICET 2018 - Bandar Seri Begawan, Brunei Darussalam
Duration: 12 Nov 201814 Nov 2018

Publication series

NameIET Conference Publications


Conference7th Brunei International Conference on Engineering and Technology 2018, BICET 2018
Country/TerritoryBrunei Darussalam
CityBandar Seri Begawan


  • Hydrodynamic models
  • Mangrove
  • Resistance
  • River

ASJC Scopus subject areas

  • Electrical and Electronic Engineering


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