Robust estimation of the total unit hydrograph

F. T. Andrews*, B. F.W. Croke, K. W. Jeanes

*Corresponding author for this work

    Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

    4 Citations (Scopus)

    Abstract

    This paper investigates three techniques for estimating the parameter values for the unit hydrograph: full model optimisation (the CWI and CMD versions of IHACRES were used), simple rainfall scaling approaches for estimating effective rainfall and an inverse filtering approach. The approaches are tested using synthetic streamow data generated by the catchment moisture deficit (CMD) version of the IHACRES model, based on observed rainfall data for Cotter catchment (near Canberra, Australia) and the Singkarak catchment (Sumatra, Indonesia). The impact of rainfall and streamow errors are considered by reducing the raingauge density and introducting errors in the rating curve. The inverse filtering apprach performed well for the synthetic streamow derived from the rainfall data for the Cotter catchment. For the Singkarak catchment data, the differences between the approaches was small, due possibly to either the higher frequency of rainfall in that area, or to the lower correlation between the rainfall gauge locations.

    Original languageEnglish
    Title of host publicationModelling for Environment's Sake
    Subtitle of host publicationProceedings of the 5th Biennial Conference of the International Environmental Modelling and Software Society, iEMSs 2010
    Pages1779-1786
    Number of pages8
    Publication statusPublished - 2010
    Event5th Biennial Conference of the International Environmental Modelling and Software Society: Modelling for Environment's Sake, iEMSs 2010 - Ottawa, ON, Canada
    Duration: 5 Jul 20108 Jul 2010

    Publication series

    NameModelling for Environment's Sake: Proceedings of the 5th Biennial Conference of the International Environmental Modelling and Software Society, iEMSs 2010
    Volume2

    Conference

    Conference5th Biennial Conference of the International Environmental Modelling and Software Society: Modelling for Environment's Sake, iEMSs 2010
    Country/TerritoryCanada
    CityOttawa, ON
    Period5/07/108/07/10

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