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Comparison of AMC-dependent CN-conversion Formulae

Author

Listed:
  • S. Mishra
  • M. Jain
  • P. Suresh Babu
  • K. Venugopal
  • S. Kaliappan

Abstract

The available antecedent moisture condition (AMC)-dependent runoff curve number (CN) (SCS, National Engineering Handbook, Supplement A, Section 4, Chapter 10, Soil Conservation Service, USDA, Washington, DC, 1956) conversion formulae due to Sobhani (M.S. Thesis, Utah State University, Logan, UT, 1975), Hawkins et al. (J Irrig Drain Eng, ASCE 111:330–340, 1985), Chow et al. (McGraw-Hill, New York, 1988), and Neitsch et al. (Texas Water Resources Institute, College Station, TX, TWRI Report TR-191, 2002) were compared utilizing the NEH-4 CN-values (SCS, National Engineering Handbook, Supplement A, Section 4, Chapter 10, Soil Conservation Service, USDA, Washington, DC, 1972) as target values. The Sobhani formula was found to perform the best in CN I -conversion, and the Hawkins formula in CN III -conversion. When evaluated on a large set of Agriculture Research Service (United States) data, a newly proposed formula performed the best of all, and the Neitsch formula the poorest, and therefore, the former was recommended for field use. The poorest performance of the latter is largely attributed to the occurrence of unreasonable negative CN I -values at low CN II -values. Copyright Springer Science+Business Media B.V. 2008

Suggested Citation

  • S. Mishra & M. Jain & P. Suresh Babu & K. Venugopal & S. Kaliappan, 2008. "Comparison of AMC-dependent CN-conversion Formulae," Water Resources Management: An International Journal, Published for the European Water Resources Association (EWRA), Springer;European Water Resources Association (EWRA), vol. 22(10), pages 1409-1420, October.
    • Handle: RePEc:spr:waterr:v:22:y:2008:i:10:p:1409-1420
    DOI: 10.1007/s11269-007-9233-5
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    Cited by:

    1. Wenhai Shi & Mingbin Huang & Kate Gongadze & Lianhai Wu, 2017. "A Modified SCS-CN Method Incorporating Storm Duration and Antecedent Soil Moisture Estimation for Runoff Prediction," Water Resources Management: An International Journal, Published for the European Water Resources Association (EWRA), Springer;European Water Resources Association (EWRA), vol. 31(5), pages 1713-1727, March.
    2. Muhammad Ajmal & Jae-Hyun Ahn & Tae-Woong Kim, 2016. "Excess Stormwater Quantification in Ungauged Watersheds Using an Event-Based Modified NRCS Model," Water Resources Management: An International Journal, Published for the European Water Resources Association (EWRA), Springer;European Water Resources Association (EWRA), vol. 30(4), pages 1433-1448, March.
    3. Pingjin Jiao & Di Xu & Shaoli Wang & Yingduo Yu & Songjun Han, 2015. "Improved SCS-CN Method Based on Storage and Depletion of Antecedent Daily Precipitation," Water Resources Management: An International Journal, Published for the European Water Resources Association (EWRA), Springer;European Water Resources Association (EWRA), vol. 29(13), pages 4753-4765, October.
    4. Muhammad Ajmal & Jae-Hyun Ahn & Tae-Woong Kim, 2016. "Excess Stormwater Quantification in Ungauged Watersheds Using an Event-Based Modified NRCS Model," Water Resources Management: An International Journal, Published for the European Water Resources Association (EWRA), Springer;European Water Resources Association (EWRA), vol. 30(4), pages 1433-1448, March.

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