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dc.contributor.author Neil en_US
dc.contributor.author Ian D. en_US
dc.contributor.author Gareth en_US
dc.date.accessioned 2011-06-14T09:25:04Z
dc.date.available 2011-06-14T09:25:04Z
dc.date.issued 2011-06-14 en_US
dc.identifier http://dx.doi.org/10.1002/hyp.7618 en_US
dc.identifier.citation Macdonald , N , Phillips , I D & Mayle , G 2011 , ' Spatial and temporal variability of flood seasonality in Wales ' Hydrological Processes , vol 24 , no. 13 , pp. 1806-1820 . , 10.1002/hyp.7618 en_US
dc.identifier.other PURE: 167376 en_US
dc.identifier.other dspace: 2160/7057 en_US
dc.identifier.uri http://hdl.handle.net/2160/7057
dc.description.abstract High-magnitude floods across Europe within the last decade have resulted in the widespread reassessment of flood risk; this coupled with the introduction of the Water Framework Directive (2000) has increased the need for a detailed understanding of seasonal variability in flood magnitude and frequency. Mean day of flood (MDF) and flood seasonality were calculated for Wales using 30 years of gauged river-flow records (1973-2002). Noticeable regional variations in timing and length of flood season are evident, with flooding occurring earlier in small catchments draining higher elevations in north and mid-west Wales. Low-altitude regions in West Wales exposed to westerly winds experience flooding during October-January, while large eastern draining catchments experience later flooding (January-February). In the northeast and mid-east regions December-January months experience the greatest number of floods, while the southeast has a slightly longer flood season (December-February), with a noticeable increase in January floods. Patterns obtained from MDF data demonstrate their effectiveness and use in analysing regional patterns in flood seasonality, but catchment-specific determinants, e. g. catchment wetness, size and precipitation regime are important factors in flood seasonality. Relatively strong correlations between precipitation and flood activity are evident in Wales, with a poorer relationship between flooding and weather types and the North Atlantic Oscillation (NAO). Copyright (C) 2010 John Wiley & Sons, Ltd. en_US
dc.format.extent 15 en_US
dc.relation.ispartof Hydrological Processes en_US
dc.subject flood en_US
dc.subject seasonality en_US
dc.subject North Atlantic Oscillation en_US
dc.subject gauged en_US
dc.subject Wales en_US
dc.title Spatial and temporal variability of flood seasonality in Wales en_US
dc.contributor.pbl Institute of Geography & Earth Sciences en_US
dc.contributor.pbl Other IGES Research en_US


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