Core FEH statistical methods

Dixon, H., Faulkner, D., Fry, M., Kral, F., Lamb, R., Macklin, M., Prosdocimi, I., Reed, D., Rogers, P., Sefton, C., Stewart, L., Vesuviano, G. 2017. Making better use of local data in flood frequency estimation. Bristol, Environment Agency, 213pp. Report SC130009.

Environment Agency. 2024. Estimating flood peaks and hydrographs for small catchments: Phase 2. Project: SC090031.

Kjeldsen, T.R., Jones, D. A., and Bayliss, A. C. 2008. Improving the FEH statistical procedures for flood frequency estimation. Joint Defra / Environment Agency Flood and Coastal Erosion Risk Management R&D Programme, Science Report: SC050050.

Kjeldsen, T.R, Jones. D. A., and Morris, D. G. 2014. Using multiple donor sites for enhanced flood estimation in ungauged catchments, Water Resour. Res., 50, 6646–6657, doi:10.1002/ 2013WR015203.

Robson, A. and Reed, D. 1999. Statistical procedures for flood frequency estimation, Flood Estimation Handbook Volume 3, pp338.

Vesuviano, G., Griffin, A. 2025. The FEH 2025 Statistical Method Update. UK Centre for Ecology & Hydrology, Wallingford, UK.

Supporting documents

Bayliss, A. C., Black, K. B., Fava-Verde, A. and Kjeldsen, T.R. 2006. URBEXT2000 – a new FEH catchment descriptor. R&D Technical Report FD1919/TR, Department of Food, Agriculture and Rural Affairs (DEFRA), London.

Griffin, A. Stewart, L., Vesuviano, G., and Haxton., T. 2025. Uncertainty in FEH methods v2. A short guide for FEH users.

Griffin, A., Young, A and Stewart, L. 2019. Revising the BFIHOST catchment descriptors to improve UK flood frequency estimates. Hydrology Research. Vol 50. Issue 6. 1508 - 1519.

Houghton-Carr, H., 1999. Restatement and application of the Flood Studies Report rainfall-runoff method. Flood Estimation Handbook Volume 4.

Institute of Hydrology Report No. 126. 1995. Hydrology of soil types: a hydrologically based classification of the soils of the United Kingdom.

JBA Consulting, 2022. Review of flood frequency estimation in groundwater-dominated catchments. Final report for Environment Agency.

Kjeldsen, T.R and Jones, D. 2010. Predicting the index flood in ungauged UK catchments: On the link between data-transfer and spatial model error, J. Hydrol., 387, 1–9.

Kjeldsen, T.R. 2010. Modelling the impact of urbanization on flood frequency relationships in the UK. Hydrology Research, Volume 41, Issue 5, 391-405.

Kjeldsen, T.R, Ahn, H and Prosdocimi, I. 2017. On the use of a four-parameter kappa distribution in regional frequency analysis. Hydrological Sciences Journal. 62:9, 1354-1363.

Rowland, C.S.; Morton, R.D.; Carrasco, L.; McShane, G.; O'Neil, A.W.; Wood, C.M. (2017). Land Cover Map 2015 (25m raster, GB). NERC Environmental Information Data Centre. https://doi.org/10.5285/bb15e200-9349-403c-bda9-b430093807c7

Vesuviano, G., Wallbank, J., Griffin, A., Miller, J. 2025. New FEH Catchment Descriptors 2025: Updates to FARL, SAAR, URBEXT and BFIHOST. UK Centre for Ecology & Hydrology, Wallingford, UK.

WHS science reports and guidance

Wallingford HydroSolutions. 2016. WINFAP 4 QMED Linking equation.

Wallingford HydroSolutions. 2016. WINFAP 4 Urban adjustment procedures.

Wallingford HydroSolutions, Revitalised Flood Hydrograph Model ReFH2: Technical Guide.

Walllingford HydroSolutions, WINFAP5.3 Urban Technical Note v1.