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2002•ISH Journal of Hydraulic EngineeringRequires access

ESTIMATION OF SCS CURVE NUMBERS FOR A BASIN USING RAINFALL-RUNOFF DATA

Chandranath Chatterjee, Ramakar Jha, Anil Kumar Lohani, Rakesh Kumar, Rajendra Prasad Singh

Open publisher page 4 citations

Abstract

The SCS runoff curve number method is one of the most popular and widely used method for estimation of runoff. The advantages of this method are its simplicity, predictability, stability and its reliance on only one parameter namely, the curve number. The curve number is a dimensionless coefficient which reflects hydrologie soil group, land use and treatment, ground surface condition and antecedent moisture conditions. In this study, the runoff curve numbers of Punpun basin upto Hamidnagar gauging site were estimated using rainfall-runoff data of seven rainfall-runoff events. Further, based on the estimated curve numbers, curves have been developed for estimation of direct surface runoff from rainfall.

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What this paper is about

The SCS runoff curve number method is one of the most popular and widely used method for estimation of runoff. The advantages of this method are its simplicity, predictability, stability and its reliance on only one parameter namely, the curve number. The curve number is a dimensionless coefficient which reflects hydrologie soil group, land use and treatment, ground surface condition and antecedent moisture conditions. In this study, the runoff curve numbers of Punpun basin upto Hamidnagar gauging site were estimated using rainfall-runoff data of seven rainfall-runoff events. Further, based on the estimated curve numbers, curves have been developed for estimation of direct surface runoff from rainfall.

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Available abstract

The SCS runoff curve number method is one of the most popular and widely used method for estimation of runoff. The advantages of this method are its simplicity, predictability, stability and its reliance on only one parameter namely, the curve number. The curve number is a dimensionless coefficient which reflects hydrologie soil group, land use and treatment, ground surface condition and antecedent moisture conditions. In this study, the runoff curve numbers of Punpun basin upto Hamidnagar gauging site were estimated using rainfall-runoff data of seven rainfall-runoff events. Further, based on the estimated curve numbers, curves have been developed for estimation of direct surface runoff from rainfall.

Key concepts: Runoff curve number, Surface runoff, Estimation, Structural basin, Environmental science, Hydrology (agriculture), Runoff model, Statistics

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