The Environment Agency said Exercise Watermark was England and Wales's biggest emergency planning exercise, and was one of the recommendations made by Sir Michael Pitt in his review of the summer 2007 floods.
Gender inequalities continue to undermine the ability of women and girls to exercise the full enjoyment of their rights, and to become active partners in emergency response, rehabilitation and development.
In the meantime, he said an assembly government emergency planning official inside the Cobra committee was providing regular updates, and Wales had already carried out an exercise in preparation for just such an attack.