Abstract
A conceptual catchment model of the instantaneous unit sediment graph was developed for sediment graph prediction and to determine the effect of soil conservation measures on sediment flow for a mountainous watershed by routing mobilized sediment through a series of linear reservoirs. The sediment graphs generated by convolution of the instantaneous unit sediment graph with mobilized sediment were compared with the natural observed ones on the Chaukhutia watershed comprising an area of 452km 2 of the Ramganga reservoir catchment. The mobilized sediment during a storm was related to rainfall excess and the parameters of the model were estimated utilizing fourteen sediment events observed during the years 1976–84.
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