Conclusion..................................................................................................................................................95

The locations of these flow paths are displayed in Figure 1.

Mainstream flooding occurs from rising water on a defined watercourse causing the watercourse to break its banks and inundate areas that are usually dry. This mechanism typically occurs over a long period of time and generally results in deep, slow moving floodwaters. Image 2 (right hand side) depicts this mechanism.

Mainstream flooding occurs in Exile Bay along the trapezoidal channel known as Saltwater Creek (shown in Figure 1). Historically flooding has occurred along this watercourse from high astronomical tides and was potentially exacerbated between the 1960s and 1990s from the implementation of a weir structure across the channel outlet which was used to retain water for irrigation of the Massey Park Golf Course.

Image 2: Flood Mechanisms affecting Exile Bay

Oveland Flow Flooding Mainstream Flooding