Estimation of an index flood using data transfer in the UK

Kjeldsen, Thomas Rodding; Jones, David. 2007 Estimation of an index flood using data transfer in the UK. Hydrological Sciences Journal, 52 (1). 86-98.

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An important part of the statistical procedure for flood frequency analysis in the UK outlined in the Flood Estimation Handbook (FEH) is concerned with estimation of an index flood at an ungauged site. This is carried out through application of a multivariate regression model linking the index flood, defined as the median annual maximum flood, to a set of catchment descriptors. The FEH then emphasises the importance of data transfer from nearby gauged (donor) sites, or from catchments considered to be hydrologically similar but located anywhere in the UK (analogue sites). This paper considers the suggested methods for estimating the index flood at ungauged sites and develops a new and improved data transfer scheme. A study of 728 gauged catchments located in the UK found that the new data transfer method performs better than both using the FEH regression model only and the FEH data transfer method.

Item Type: Publication - Article
Digital Object Identifier (DOI):
Programmes: CEH Programmes pre-2009 publications > Water
UKCEH and CEH Sections/Science Areas: _ Hydrological Risks & Resources
ISSN: 0262-6667
Additional Keywords: index flood, ungauged site, data transfer, uncertainty, catchment basins, flood estimation, flood frequency analysis, floods, hydrologic analysis, maximum floods, regression models, statistical analysis
NORA Subject Terms: Hydrology
Date made live: 25 Jan 2008 10:22 +0 (UTC)

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