3.3.1. St Philips Marsh

The benefits of protecting the riverside low spots subsequently by removing the over-spilling flood extents shown in Figure 12 in the Bristol central area were quantified through a damages assessment. Present-day damages are estimated through the MCM in the order of £40M whereas in 100 years with the rate of sea-level rise continuing, this will be around £400M. The cost-benefit ratio can be gauged from this when scoping out flood defences that may be suitable, feasible and economically affordable at this locality.

**Figure 12.** DeFRA/Environment Agency Flood Hazard Mapping showing the danger posed to people (please refer to Table 2) at St Philips Marsh for a 0.5%AEP tidal flood event.
