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    Validating the Soil Conservation Service Triangular Unit Hydrograph (SCS-TUH) model in estimating runoff peak discharge of a catchment in Masvingo, Zimbabwe

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    Authors
    Nhamo, Luxon
    Christopher, M.
    Chilonda, Pius
    Date
    2013
    Language
    en
    Type
    Journal Article
    Accessibility
    Open Access
    Metadata
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    Citation
    Nhamo, Luxon; Christopher, M.; Chilonda, Pius. 2013. Validating the Soil Conservation Service Triangular Unit Hydrograph (SCS-TUH) model in estimating runoff peak discharge of a catchment in Masvingo, Zimbabwe. International Journal of Water Resources and Environmental Engineering, 5(3):157-162. doi: http://dx.doi.org/10.5897/IJWREE12.085
    Permanent link to cite or share this item: http://hdl.handle.net/10568/40201
    External link to download this item: http://www.academicjournals.org/ijwree/PDF/Pdf2013/Mar/Luxon%20et%20al.pdf
    Abstract/Description
    The knowledge of runoff discharged by a catchment at its outlet is important for water accounting and water allocation to competing uses. Runoff generated by a catchment is important in determining the catchment water balance, estimating pollutant loads, and quantifying sediment yield and delivery ratio. The Soil Conservation Service triangular unit hydrograph (SCS-TUH) model was used in this study to simulate water discharged into Siya Dam from Rosva River Catchment in Masvingo Province, Zimbabwe. The SCS-TUH model is preferred because it takes into consideration the physical and hydrological conditions of a catchment, as well, as the volume and flow variations of the entire rainfall event. The model simulates the peak runoff rate of a catchment using daily rainfall data. An overview of the methodology and the different steps followed are given. The model results were validated by comparing the simulated values with measured values recorded from a gauging station at the catchment outlet. The plotted hydrographs of both simulated and measured values coincided very well in height as well as in shape with great precision. The results showed that the SCS-TUH model can be used for simulating runoff discharge in ungauged catchments in the region.
    CGIAR Affiliations
    Water, Land and Ecosystems
    Subjects
    SOIL CONSERVATION; MODELS; RUNOFF; CATCHMENT AREAS; FLOW DISCHARGE; WATER MANAGEMENT; WATER AVAILABILITY; WATER ALLOCATION; WATER BALANCE;
    Countries
    ZIMBABWE
    Regions
    SOUTHERN AFRICA
    Collections
    • IWMI Journal Articles [1927]
    • Managing Resource Variability and Competing Use [422]

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