To ask the Secretary of State for Environment, Food and Rural Affairs pursuant to the answer of 21 January 2008, Official Report, column 1493W, on floods, on which regional boundaries the (a) regional flood defence committees and (b) regional flood risk appraisals are based.
Regional Flood Defence Committee boundaries are based on hydrological catchment boundaries, with the exception that the westerly boundaries of the Regional Flood Defence Committees adjoining Wales follow the boundary between England and Wales.
Similarly, strategic level flood risk assessments are undertaken by river catchment rather than by regional boundary. The Environment Agency is currently preparing catchment flood management plans for all of England and Wales.
Flood risk assessments for smaller areas may be aggregated to administrative boundaries. However, risk will vary greatly within administrative areas and may be significantly influenced by activities outside these boundaries. Appraisals are therefore not normally based on administrative boundaries.