Floodviewer shows best available flood information, but this does not mean there is no risk of flooding for the following reasons:
Some areas are yet to be modelled, so we don't have data available for them; these are greyed out in Floodviewer.
Because modelling relies on data inputs and assumption, the model may not predict the full extent of flooding.
Flood hazard mapping is for a 100-year event. A larger flood event could flood a larger area and/or to a greater depth than shown on the flood hazard maps.