A Simple Conceptual Model of Sediment Yield

Pradeep Bhunya (), S. Jain, Piyush Singh and S. Mishra

Water Resources Management: An International Journal, Published for the European Water Resources Association (EWRA), 2010, vol. 24, issue 8, 1697-1716

Abstract: The sediment graphs (time distribution of sediment yield) are very essential if the sediment transports the pollutants that are toxic at high concentrations, requiring determination of peak, rather than average sediment flow rate. In this paper, an effort has been made to develop a simple conceptual model of sediment yield based on Soil Conservation Service Curve Number (SCS-CN) method, instantaneous unit sediment graph (IUSG) method, and Power law and the performance is tested using real field data of Chaukhutia watershed of Ramganga river catchment (area=452.25 km 2 ). The proposed model is found to provide realistic estimates of temporal variation of sediment yield as well as total sediment yield during a storm event. The model is found to be most sensitive to parameter β followed by k, $\upalpha$ , A, and n s . A comparison is made with the existing IUSG based models of Kumar and Rastogi (J Hydrol 95:155–163, 1987 ) and Raghuwanshi et al. (J Hydraul Eng ASCE 120(4):495–503, 1994 ) for developing sediment graphs. Copyright Springer Science+Business Media B.V. 2010

Keywords: SCS-CN method; Instantaneous unit sediment graph (IUSG); Catchment routing; Sediment graph; Sediment delivery ratio (search for similar items in EconPapers)
Date: 2010
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Citations: View citations in EconPapers (3)

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DOI: 10.1007/s11269-009-9520-4

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