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Please use this identifier to cite or link to this item: http://repository.iitr.ac.in/handle/123456789/15000
Title: Comparison of AMC-dependent CN-conversion formulae
Authors: Mishra, Surendra Kumar
Jain, Manoj Kumar
Suresh Babu P.
Venugopal K.
Kaliappan S.
Published in: Water Resources Management
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 CNI -conversion, and the Hawkins formula in CNIII-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 CNI-values at low CNII-values. © Springer Science+Business Media B.V. 2007.
Citation: Water Resources Management (2008), 22(10): 1409-1420
URI: https://doi.org/10.1007/s11269-007-9233-5
http://repository.iitr.ac.in/handle/123456789/15000
Issue Date: 2008
Keywords: AMC
ARS water database
CN
Curve number
Rainfall runoff modeling
SCS-CN
USDA
ISSN: 9204741
Author Scopus IDs: 55463271000
55555537300
54780826400
7005430256
12041255700
Author Affiliations: Mishra, S.K., WRDM, Indian Institute of Technology, Roorkee 247 667 U.P., India
Jain, M.K., Department of Hydrology, Indian Institute of Technology, Roorkee 247 667 U.P., India
Suresh Babu, P., Catchment and Waterways Department, Public Utilities Board (PUB), Singapore, Singapore
Venugopal, K., Institute of Remote Sensing, Anna University, Chennai 600 025, India
Kaliappan, S., Institute of Remote Sensing, Anna University, Chennai 600 025, India
Corresponding Author: Mishra, S.K.; WRDM, Indian Institute of Technology, Roorkee 247 667 U.P., India; email: skm61fwt@iitr.ernet.in
Appears in Collections:Journal Publications [WR]

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