4. An assessment of the potential adverse consequences of any future flood for human health, the environment, cultural heritage and economic activity in the river basin district taking into account, as far as possible, issues such as—
(i)the topography;
(ii)the position, and the general hydrological and geomorphological characteristics of watercourses;
(iii)natural features (for example flood plains, wetlands or woodlands) which can assist in the retention of water (whether on a permanent or temporary basis);
(iv)the effectiveness of any existing artificial flood protection structure;
(v)the position of any populated area and area of economic activity; and
(vi)long-term developments including impacts of climate change on the occurrence of floods.