Figure 8 - I in 100 year flood model

This image depict the 1% Annual Exceedance Probability (AEP) Peak Flood Depths and Levels for the whole study area. Historically this was referred to as the 1 in 100 year flood.

This is a benchmark figure in flood terminology which is used to derive other flood control measures used in land use planning, such as the Flood Planning Levels and Flood Planning Area. It should be noted that the 1 in 100 year event is a measure of intensity not frequency.

The Flood Planning Levels are a combination of the flood levels (1%AEP) and freeboards selected for floodplain risk management purposes.

The Flood Planning Area is an area subject to development controls, which for the Kempsey Study area is the 1% AEP plus .500m.

Figure 8 - 1% Annual Exceedance Probability (AEP)