Spatially Distributed Unit Hydrograph for Varuna River Basin of India
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The most crucial part of the SDUH model is the computer algorithm for the computation of the time-area diagram. In the present paper the travel times were computed, for the sake of simplicity, from equilibrium flow conditions and later adjusted empirically for neglected effects of storage and unsteady flow. The SDUH model of a watershed can be efficiently implemented by the use of a GIS. The GIS enables capture and to utilization a number of watershed and rainfall distributed parameters in the model, which is not possible when using the classical unit hydrograph approach. So far, experience with the SDUH modelling indicates that it is a very promising new tool for the prediction of flood hydrographs.
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