Flood hazard mapping is an exercise to define those coastal areas which are at risk of flooding under extreme conditions. As such, its primary objective is to reduce the impact of coastal flooding. However, mapping of erosion risk areas may serve to achieve erosion risk reduction. It acts as an information system to enhance our understanding and awareness of coastal risk.
"Preventing damage caused by floods:
(1) by avoiding construction of houses and industries in present and future flood-prone areas;
(2) by adapting existing receptors to the risk of flooding; and ensure that future developments take flood risk into account;
(3) by promoting appropriate land-use."
(EC 2013: Guidance for Reporting under the Floods Directive)