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Drought termination can be associated with dramatic transitions from drought\udto flooding. Greater attention may be given to these newsworthy and memorable\udevents, but drought terminations that proceed gradually also pose challenges\udfor water resource managers. This paper defines drought termination as a\uddistinctive phase of the event. Using observed river flow records for 52 UK\udcatchments, a more systematic and objective approach for detecting drought\udterminations is demonstrated. The parameters of the approach are informed by\uda sensitivity analysis that ensures a focus on terminations of multi-season\udto multi-year droughts. The resulting inventory of 467 drought terminations\udprovides an unprecedented historical perspective on this phenomenon in the\udUK. Nationally and regionally coherent drought termination events are\udidentifiable, although their characteristics vary both between and within\udmajor episodes. Contrasting drought termination events in 1995–1998 and\ud2009–2012 are examined in greater depth. The data are also used to assess\udpotential linkages between metrics of drought termination and catchment\udproperties. The duration of drought termination is moderately negatively\udcorrelated with elevation (rs =  −0.47) and catchment average\udrainfall (rs =  −0.42), suggesting that wetter catchments in\udupland areas of the UK tend to experience shorter drought terminations. More\udurbanized catchments tend to have gradual drought terminations (contrary to\udexpectations of flashy hydrological response in such areas), although this\udmay also reflect the type of catchments typical of lowland England.\udSignificant correlations are found between the duration of the drought\uddevelopment phase and both the duration (rs =  −0.29) and rate\ud(rs =  0.28) of drought termination. This suggests that prolonged\uddrought development phases tend to be followed by shorter and more abrupt\uddrought terminations. The inventory helps to place individual events within a\udlong-term context. The drought termination phase in 2009–2012 was, at the\udtime, regarded as exceptional in terms of magnitude and spatial footprint,\udbut the Thames river flow record identifies several comparable events before\ud1930. The chronology could, in due course, provide a basis for exploring the\udcomplex drivers, long-term variability, and impacts of drought termination\udevents

A systematic assessment of drought termination in the United Kingdom