Flood risk vulnerability and flood zone ‘compatibility’

This table does not show the application of the Sequential Test which should be applied first to guide development to Flood Zone 1, then Zone 2, and then Zone 3; nor does it reflect the need to avoid flood risk from sources other than rivers and the sea

† In Flood Zone 3a essential infrastructure should be designed and constructed to remain operational and safe in times of flood. ” * “ In Flood Zone 3b (functional floodplain) essential infrastructure that has to be there and has passed the Exception Test, and water-compatible uses, should be designed and constructed to: remain operational and safe for users in times of flood; result in no net loss of floodplain storage; not loss of floodplain storage; not impede water flows and not increase flood risk elsewhere.pede water flows and not increase flood risk elsewhere.