Multiple hazard mapping
So far we have considered the development of single hazard maps-maps that show the extent of the likely effects of a single hazard (e.g. flood, earthquake). However, from a planning perspective, it is important that a community considers all hazards, rather than concentrate on a narrow range. It's possible to combine the data from a single hazard map into a multiple or total hazard map to illustrate the total hazard picture for a community/area.
The reading that follows discusses this concept of 'multiple hazard mapping'-how the maps are constructed, how they can be used to simulate disasters and predict expected losses, and interestingly, how they can also be used to provide information when the nature of the hazard is not clearly understood.
So, we have seen that hazard mapping is a very useful way of presenting the results of a hazard analysis within your risk assessment. Unfortunately the time and expense involved will most likely place them outside the scope of your assignment.