FLOOD MODELLING USING CSIRO DATA61’S MODELLING TOOLKIT CFAST - A CASE STUDY OF THE RIVERVIEW FAMILY CARAVAN PARK IN VICTORIA

Abstract

The Riverview Family Caravan Park (RFCP) sits on the eastern bank of the Barwon River Estuary in Ocean Grove, Victoria, Australia and is managed by the Barwon Coast Committee of Management (BCCM). The Park is susceptible to inundation during extreme weather events including catchment flooding from the Barwon River and storm surges from the Bass Straight. To protect from this river inundation there is a levee bank consisting of a rock revetment (seawall) with an elevated shared trail along its crest. This inundation risk will increase with climate change induced sea level rise (SLR), therefore, the BCCM was concerned with quantifying the long-term effectiveness of the elevated shared trail adaptation and to assess proposed flood risk management strategies such as further elevating the shared trail and the implementation of a detention basin.This study used detailed hydrodynamic and hydraulic modelling utilising the City-based Flood Adaptation Solutions Tool (CFAST) developed by CSIRO Data61 (Prakash et al., 2019) to determine the inundation risk posed by different scenarios with different adaptations applied.