Swaines Creek
flood Study
The Swaines Creek Flood Study represents an in-depth technical investigation into flooding, defining flood levels, extent and velocity for storm events of various severities up to and including the Probable Maximum Flood. It constitutes a major technical foundation from which a floodplain risk management plan can be formulated.
The Swaines Creek Flood Study involved the following activities:
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Community consultation
Community newsletters/questionnaires were distributed by Council in May 2012, inviting residents to provide information on historic flooding patterns. Follow up resident interviews were subsequently organised to ground-truth the results of the hydraulic model.
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Hydraulic model development and testing
Hydrologic modelling software and two-dimensional hydraulic modelling software were used to derive the design flood hydrographs and flood envelopes.
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Presentation of study results
The study results are presented as water surface profiles and indicative levels, extents of inundation as a result of various intensity storm events and the categorisation of properties into provisional hazard zones at risk during a flood.
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Sensitivity studies and analysis
Sensitivity studies were also carried out to assess the effects on flooding as a result of partial pipe blockages and the effects of climate change on increased rainfall intensities and sea level rise.
Documents