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A Modified SCS-CN Method: Characterization and Testing

Author

Listed:
  • S. Mishra
  • Vijay Singh
  • J. Sansalone
  • V. Aravamuthan

Abstract

The Soil Conservation Service Curve Number (SCS-CN) method (SCS,1956) is modified by accounting for the static portion ofinfiltration and the antecedent moisture. A volumetric analysisshows that the ratio of the potential maximum retention (S) tothe precipitation amount versus the runoff factor relation isequivalent to the average suction pressure-moisture contentrelation for a unit rainfall amount and a given soil porosity. Asimple spreadsheet procedure is suggested for determining S withuse of a 5-day antecedent precipitation amount. The modifiedmethod is found to perform well on the same data sets as used inthe National Engineering Handbook (SCS, 1971). Copyright Kluwer Academic Publishers 2003

Suggested Citation

  • S. Mishra & Vijay Singh & J. Sansalone & V. Aravamuthan, 2003. "A Modified SCS-CN Method: Characterization and Testing," Water Resources Management: An International Journal, Published for the European Water Resources Association (EWRA), Springer;European Water Resources Association (EWRA), vol. 17(1), pages 37-68, February.
    • Handle: RePEc:spr:waterr:v:17:y:2003:i:1:p:37-68
    DOI: 10.1023/A:1023099005944
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    Citations

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    Cited by:

    1. Nayara P. V. Andrade & Marcelo R. Viola & Samuel Beskow & Tamara L. Caldeira & Li Guo & Carlos R. Mello, 2020. "Assessment of Spatial and Temporal Soil Water Storage Using a Distributed Hydrological Model," Water Resources Management: An International Journal, Published for the European Water Resources Association (EWRA), Springer;European Water Resources Association (EWRA), vol. 34(15), pages 5031-5046, December.
    2. Zandra A. Cunha & Carlos R. Mello & Samuel Beskow & Marcelle M. Vargas & Jorge A. Guzman & Maíra M. Moura, 2023. "A Modeling Approach for Analyzing the Hydrological Impacts of the Agribusiness Land-Use Scenarios in an Amazon Basin," Land, MDPI, vol. 12(7), pages 1-20, July.
    3. Cyr, Jean-François & Landry, Mathieu & Gagnon, Yves, 2011. "Methodology for the large-scale assessment of small hydroelectric potential: Application to the Province of New Brunswick (Canada)," Renewable Energy, Elsevier, vol. 36(11), pages 2940-2950.
    4. J. Patil & A. Sarangi & O. Singh & A. Singh & T. Ahmad, 2008. "Development of a GIS Interface for Estimation of Runoff from Watersheds," Water Resources Management: An International Journal, Published for the European Water Resources Association (EWRA), Springer;European Water Resources Association (EWRA), vol. 22(9), pages 1221-1239, September.

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