Static Inundation Modelling

Static-model inundation was carried out for nine areas, Queenscliff, Swan Bay, St Leonards, Indented Head, Portarlington, Ramblers Road, the Sands Caravan Park area and northern Corio Bay (Avalon Beach and Point Wilson). All of these areas are very low-lying, with little protection from oceanic inundation, especially in the long term.

This inundation modelling uses the LiDAR DEM with the storm-tide levels to predict potential flood extents. Although this method provides less certainty than the hydrodynamic modelling, it still gives a sound indication of potential inundation extents under the various scenarios, especially for areas of low-lying land where flooding mechanisms are less complex.

The storm-tide levels presented in Table 4-8 were used in conjunction with the LiDAR digital elevation model to determine extents based on land elevation. These extents were then edited to account for possible flow paths where necessary to ensure all areas shown to flood were in some way connected to the flooding source.

Durations of storm-tide events

Uncertainty