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    Water surface profile modelling for Pinjarra flood diversion channel and economic evaluation

    17589_Klalil full.pdf (9.039Mb)
    Access Status
    Open access
    Authors
    Khalil, Kamal
    Date
    2007
    Supervisor
    Prof. Hamid Nikhraz
    Type
    Thesis
    Award
    MEng
    
    Metadata
    Show full item record
    School
    Department of Civil Engineering
    URI
    http://hdl.handle.net/20.500.11937/2455
    Collection
    • Curtin Theses
    Abstract

    Shire of Murray has concerns regarding the negative impact that a 100 year flood could have on existing structures built before 1997. The increase cost in construction due to landfill has an adverse effect on development in Pinjarra. Feasibility of constructing a diversion channel at upstream of Murray River to attenuate the flood level from 1 in 100 year ARI to 1 in 50 year ARI, was investigated by Kiong (2003). The Murray River Water Surface Profile along three kilometres south of Greenlands Road was modelled. Flood damages on each flood occurrence were assessed and Average Annual Damage (AAD) was calculated. The AAD is used to estimate the monetary benefit against the construction cost of the diversion channel. Groundwater along Greenlands and Fauntleroy Drains was also modelled to determine the viable depth of the designed channel, as well as the analysis of backwater. The proposed channel is designed at different scenarios (invert level at breakout point, culvert or causeway design, and diversion channel variations). The benefit cost ratio of the proposed diversion channel is calculated. Other mitigation options are suggested including detention basins for structural measure, or building a new flood-proof township for non-structural measure.

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