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The Hydraulics and Morphodynamics of a Flooded Meandering Channel

  • Zulkiflee IbrahimEmail author
  • Radzuan Saari
  • Mazlin Jumain
  • Muhammad Nazmi Akmal Masri
  • Muhammad Afiq Md. Aris
  • Nur Atila Amzah
  • Md. Ridzuan Makhtar
  • Nurfarhain Mohamed Rusli
  • Abu Bakar Fadzil
  • Noraliani Alias
  • Amat Sairin Demun
  • Nor Suhaila Rahim
Conference paper
Part of the Lecture Notes in Civil Engineering book series (LNCE, volume 53)

Abstract

Meander dynamics has been the focus of river engineering for decades; however, it remains a challenge for researchers to precisely visualise natural evolution processes especially in alluvial plains. The evolution of meandering channels is a complex geomorphological process driven by the interactions between flow and alluvial channel beds and banks. The presence of vegetation along a riparian zone added the complexity of geomorphological process. Riparian vegetation is a major roughness element that influences channel morphology, decreases the average flow velocity and physically traps material that transported in alluvial rivers. A laboratory experimental investigation was carried out in Universiti Teknologi Malaysia in order to understand the flow behaviour and morphodynamics for a riparian vegetated flooded meandering channel. The morphological patterns visualisation and river channel profile changes estimation for pre and post flooding were obtained using digital close range photogrammetry technique. The findings prevailed that riparian vegetation had induced higher resistance to the flow and forced the flow to take place in main channel and right flood-plain while reduced the left floodplain flow velocity. The presence of riparian vegetation combined with the river bed morphology had increased the Manning’s n in left flood-plain. The influence of riparian vegetation on the sediment movement in the compound meandering channel was also identified. The sedimentation was 45% increased, while erosion decreased about 31% as the floodplain was roughened by vegetation.

Keywords

Meandering channel Riparian vegetation Flood hydraulics Morphodynamics Digital close-range photogrammetry 

Notes

Acknowledgements

The researchers are indebted to Research Management Centre, UTM and Ministry of Education, Malaysia for the financial support, also to many individuals who were involved in this experimental work. This finding presented in this paper is part of the research grants UTM GUP No. 15J61 and FRGS No. 5F089.

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Copyright information

© Springer Nature Switzerland AG 2020

Authors and Affiliations

  • Zulkiflee Ibrahim
    • 1
    Email author
  • Radzuan Saari
    • 1
  • Mazlin Jumain
    • 1
  • Muhammad Nazmi Akmal Masri
    • 1
  • Muhammad Afiq Md. Aris
    • 1
  • Nur Atila Amzah
    • 1
  • Md. Ridzuan Makhtar
    • 1
  • Nurfarhain Mohamed Rusli
    • 2
  • Abu Bakar Fadzil
    • 1
  • Noraliani Alias
    • 1
  • Amat Sairin Demun
    • 1
  • Nor Suhaila Rahim
    • 1
  1. 1.Department of Water and Environmental Engineering, School of Civil Engineering, Faculty of EngineeringUniversiti Teknologi MalaysiaJohor BahruMalaysia
  2. 2.Research Institute for Sustainable EnvironmentUniversiti Teknologi MalaysiaJohor BahruMalaysia

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