In recent years, through the availability of remotely sensed data and other national datasets, it has become possible to conduct national-scale flood risk assessment in England and Wales. The results of this type of risk analysis can be used to inform policy-making and prioritisation of resources for flood management. It can form the starting point for more detailed strategic and local-scale flood risk assessments. The national-scale risk assessment methodology outlined in this paper makes use of information on the location, standard of protection and condition of flood defences in England and Wales, together with datasets of floodplain extent, topography, occupancy and asset values. The flood risk assessment was applied to all of England and Wales in 2002 at which point the expected annual damage from flooding was estimated to be approximately £1 billion. This figure is comparable with records of recent flood damage. The methodology has subsequently been applied to examine the effects of climate and socio-economic change 50 and 80 years in the future. The analysis predicts increasing flood risk unless current flood management policies, practices and investment levels are changed – up to 20-fold increase in real terms economic risk by the 2080s in the scenario with highest economic growth. The increase is attributable primarily to a combination of climate change (in particular sea level rise and increasing precipitation in parts of the UK) and increasing economic vulnerability.
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DTI: 2003, Foresight Futures 2020: Revised Scenarios and Guidance, Department of Trade and Industry.
J.W. Hall R.J. Dawson P.B. Sayers C. Rosu J.B. Chatterton R. Deakin (2003) ArticleTitleA methodology for national-scale flood risk assessment Water Maritime Eng. 156 IssueID3 235–247 Occurrence Handle10.1680/maen.22.214.171.124976
HR Wallingford: 2000, National appraisal of assets at risk from flooding and coastal erosion, Technical Report volumes 1 and 2, HR Wallingford Report TR107.
HR Wallingford: 2003, National flood risk assessment 2002, HR Wallingford Report EX4722.
M. Hulme G. J. Jenkins X. Lu J. R. Turnpenny T. D. Mitchell R. G. Jones J. Lowe J. M. Murphy D. Hassell P. Boorman R. McDonald S. Hill (2002) Climate change scenarios for the United Kingdom: The UKCIP02 scientific report Tyndall Centre for Climate Change Research School of Environmental Sciences University of East Anglia Norwich UK
InstitutionalAuthorNameIPCC (2000) Special report on emissions scenarios (SRES): A special report of working group III of the Intergovernmental Panel on Climate Change Cambridge University Press Cambridge
Penning-Rowsell, E. C., Johnson, C., Tunstall, S. M., Tapsell, S. M., Morris, J., Chatterton, J. B., Coker, A., and Green, C.: 2003a, The Benefits of Flood and Coastal Defence: Techniques and Data for 2003, Flood Hazard Research Centre, Middlesex University.
Penning-Rowsell, E. C., Chatterton, J., Wilson, T., and Potter, E.: 2003b, Autumn 2000 Floods in England and Wales: Assessment of National Economic and Financial Losses, Flood Hazard Research Centre, Middlesex University.
InstitutionalAuthorNameRoyal Society (1992) Risk analysis, perception and management, Report of the Royal Society Study Group The Royal Society London
SPRU, CSERGE, CRU, PSI: 1999, Socio-economic futures for climate impacts assessment, Final Report, Science and Technology Research, University of Sussex.
S. M. Tapsell E. C. Penning-Rowsell S. M. Tunstall T. L. Wilson (2002) ArticleTitleVulnerability to flooding: health and social dimensions Phil. Trans. R. Soc. Lond. A 360 IssueID1796 1511–1525
InstitutionalAuthorNameUKCIP (2001) Socio-economic Scenarios for Climate Change Impact Assessment: A Guide to Their Use in the UK Climate Impacts Programme UKCIP Oxford
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Hall, J.W., Sayers, P.B. & Dawson, R.J. National-scale Assessment of Current and Future Flood Risk in England and Wales. Nat Hazards 36, 147–164 (2005). https://doi.org/10.1007/s11069-004-4546-7