The update combines outputs from 200 detailed local flood risk models with the new state-of the-art national flood risk model. Local modelling of flood risk often captures important local features more accurately, and the integration of local and national data ensures greater consistency between flood risk information. For the first time, the maps account for future climate change impacts.
The updated mapping represents a significant step forward in understanding and managing flood risk. By incorporating future climate projections, it provides decision-makers, developers, and communities with the information required to plan effectively and adapt to a changing climate. By way of an example, the previous mapping did not include detail of depth of flooding from rivers and sea, but the new maps let people know their chance of flooding to a depth up to 20cm, 30cm, 60cm and 90cm. This allows people to consider the possible impacts to their property and whether they can use property flood resilience measures.
It should be noted that if your risk of flooding has changed on the maps, this is not a measure of how much flood risk has changed since the last update in 2017. Instead, the updated maps provide a more accurate representation of flood risk on a local scale due to better data and methodologies.
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