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Environment Agency data shows areas in England that benefit from flood defences for a 1% annual chance river flood or 0.5% annual chance sea flood. This dataset was retired on November 2, 2022, and superseded by the 'Reduction in Risk of Flooding from Rivers and Sea due to Defences' dataset. The mapping assumes defences act perfectly and aligns with Flood Zone 3 criteria from Planning Practice Guidance.
Dataset is retired. Users must download the newer 'Reduction in Risk of Flooding from Rivers and Sea due to Defences' dataset. Contains Crown copyright and database rights.