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Technical Note: Testing an improved index for analysing storm discharge–concentration hysteresis

Research output: Contribution to journalArticle

Original languageEnglish
Pages (from-to)625-632
Number of pages8
JournalHydrology and Earth System Sciences
Issue number2
Early online date4 Feb 2016
DateAccepted/In press - 17 Jan 2016
DateE-pub ahead of print - 4 Feb 2016
DatePublished (current) - Feb 2016


Analysis of hydrochemical behaviour during storm events can provide new insights into the process controls on nutrient transport in catchments. The examination of storm behaviours using hysteresis analysis has increased in recent years, partly due to the increased availability of high temporal resolution data sets for discharge and water quality parameters. A number of these analyses involve the use of an index to describe the characteristics of a hysteresis loop in order to compare storm behaviours both within and between catchments. This technical note reviews the methods for calculation of the hysteresis index (HI) and explores a new more effective methodology. Each method is systematically tested and the impact of the chosen calculation on the results is examined. Recommendations are made regarding the most effective method of calculating a HI which can be used for comparing data between storms and between different water quality parameters and catchments.

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    Rights statement: This is the author accepted manuscript (AAM). The final published version (version of record) is available online via European Geosciences Union at Please refer to any applicable terms of use of the publisher.

    Final published version, 292 KB, PDF document

    Licence: CC BY

  • Lloyd et al. 2016 Technical Note HESS

    Rights statement: This is the final published version of the article (version of record). It first appeared online via EGU at

    Final published version, 292 KB, PDF document

    Licence: CC BY


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