Modifications to SCS-CN Method for Long-Term Hydrologic Simulation
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VIEW THE REPLYPublication: Journal of Irrigation and Drainage Engineering
Volume 133, Issue 5
Abstract
The original soil conservation service curve number (SCS-CN) technique is primarily used to transform daily rainfall into surface runoff by assuming the proportionality between retention and surface runoff based on a parameter referred to as curve number (CN). The conventional method does not take into account the temporal and spatial variability of curve number. In this paper, an attempt has been made to modify the existing SCS-CN model in two ways by varying the CN using antecedent moisture condition (designated as Model I), and by using antecedent moisture amount (designated as Model II). The daily moisture storage is updated based on varying the curve number and other hydrologic abstractions. These two different models are constructed to compute streamflow components: Direct surface runoff, base flow, and hydrological abstractions. These methodologies were successfully applied to daily data of catchments of Cauvery, Narmada, Ganga, and Ulhas Rivers, lying in different climatic regions of India, and the results were analyzed. Application of Model I to Hemavati (a tributary of River Cauvery, Karnataka State) data yielded maximum efficiency of 84% in calibration, and minimum efficiency of 54% with Ramganga (a tributary of River Ganga, Uttaranchal State) data, whereas Model II showed maximum efficiency of 85% in Hemavati catchment and minimum efficiency of 64% in Kalu catchment (a tributary of River Ulhas, Maharashtra State). Model II performed better than Model I on all four catchments. It is found that the proposed models reasonably simulate the catchment response and these SCS-CN-based models are applicable to complex natured watersheds.
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References
Aron, G. (1982). Rainfall abstractions, urban stormwater hydrology, D. F. Kibbler, ed., American Geophysical Union, Washington, D.C.
Bonta, J. V. (1997). “Determination of watershed curve number using derived distributions.” J. Irrig. Drain. Eng., 123(1), 28–36.
Bosznay, M. (1989). “Generalization of the SCS curve number method.” J. Irrig. Drain. Eng., 115(1), 139–144.
Choi, J.-Y., Engel, B. A., and Chung, H. W. (2002). “Daily streamflow modelling and assessment based on the curve-number technique.” Hydrolog. Process., 16, 3131–3150.
Gan, T. Y., Dlamini, E. M., and Bifu, G. F. (1997). “Effects of model complexity and structure, data quality, and objective functions on hydrologic modeling.” J. Hydrol., 192, 81–103.
Hawkins, R. H. (1978). “Runoff curve number with varying site moisture.” J. Irrig. and Drain. Div., 104(4), 389–398.
Hawkins, R. H. (1993). “Asymptotic determination of runoff curve numbers from data.” J. Irrig. Drain. Eng., 119(2), 343–345.
Hawkins, R. H., Hjemfelt, A. T., and Zevenberger, A. W. (1985). “Runoff probability, storm depth, and curve number.” J. Irrig. Drain. Eng., 111(4), 330–340.
HEC-I Flood Hydrograph package, users’ manual. (1985). U.S. Corps of Engineers, Hydrologic Engineering Center, Sacramento, Calif.
Hjelmfelt, A. T., Jr. (1980). “An empirical investigation of curve number technique.” J. Hydr. Div., 106(9), 1471–1476.
Hjelmfelt, A. T., Jr. (1982). “Closure of ‘Empirical investigation of curve number technique.’” J. Hydr. Div., 108(4), 614–616.
Hjelmfelt, A. T., Jr. (1991). “Investigation of curve number procedure.” J. Hydraul. Eng., 117(6), 725–737.
Hope, A. S., and Schultaze, R. E. (1982). “Improved estimates of storm flow volume using the SCS curve number method.” Rainfall-runoff relationship, Water Resources Publications, Littleton, Colo., 419–428.
Kibbler, D. F. (1982). “Desktop methods for urban stormwater calculations.” Urban stormwater hydrology, D. F. Kibbler, ed., American Geophysical Union, Washington, D.C.
Knisel, W. G. (1980). “CREAMS: A field scale model for chemicals, runoff, and erosion from agricultural management systems.” Conservation Rep. No. 26, USDA, ARS, Washington, D.C.
Marquardt, D. W. (1963). “An algorithm for least squares estimation of non-linear parameters.” J. Soc. Ind. Appl. Math., 11(2), 431–441.
McCuen, R. H. (1982). A guide to hydrologic analysis using SCS methods, Prentice-Hall, Englewood Cliffs, N.J.
McCuen, R. H. (2002). “Approach to confidence interval estimation for curve numbers.” J. Hydrol. Eng., 7(1), 43–48.
Mishra, S. K. (1998). “Operation of a multipurpose reservoir.” Ph.D. thesis, Univ. of Roorkee, Uttaranchal, India.
Mishra, S. K., Geetha, K., Rastogi, A. K., and Pandey, R. P. (2005). “Long-term hydrologic simulation using storage and source area concepts.” Hydrolog. Process., 19(14), 2845–2861.
Mishra, S. K., Goel, N. K., Seth, S. M., and Srivastava, D. K. (1998). “An SCS-CN-based long-term daily flow simulation model for a hilly catchment.” Proc., Int. Symp. Hydrology of Ungauged Streams in Hilly Regions for Small Hydro Power Development, New Delhi, India.
Mishra, S. K., Jain, M. K., Pandey, R. P., and Singh, V. P. (2003). “Evaluation of AMC-dependent SCS-CN-based models using large data of small watersheds.” Water and Energy International, 60(3), 13–23.
Mishra, S. K., and Singh, V. P. (1999). “Another look at the SCS-CN method.” J. Hydrol. Eng., 4(3), 257–264.
Mishra, S. K., and Singh, V. P. (2002a). “Chapter 13: SCS-CN-based hydrologic simulation package.” Mathematical models in small watershed hydrology and applications, V. P. Singh and D. K. Frevert, eds., Water Resources Publications, Littleton, Colo., 391–464.
Mishra, S. K., and Singh, V. P. (2002b). “SCS-CN method. Part I: Derivation of SCS-CN based models.” Acta Geophys. Pol., 50(3), 457–477.
Mishra, S. K., and Singh, V. P. (2003a). “SCS-CN method. Part II: Analytical treatment.” Acta Geophys. Pol., 51(1), 107–123.
Mishra, S. K., and Singh, V. P. (2003b). Soil conservation service curve number (SCS-CN) methodology, Kluwer Academic Publishers, Dordrecht, The Netherlands.
Mishra, S. K., and Singh, V. P. (2004). “Long-term hydrological simulation based on the Soil Conservation Service curve number.” Hydrolog. Process., 18(7), 1291–1313.
Nash, J. E., and Sutcliffe, J. V. (1970). “River flow forecasting through conceptual models. Part I-A: Discussion of principles.” J. Hydrol., 10, 282–290.
Ponce, V. M. (1989). Engineering hydrology: Principles and practices, Prentice-Hall, Englewood Cliffs, N.J.
Ponce, V. M., and Hawkins, R. H. (1996). “Runoff curve number: Has it reached maturity?” J. Hydrol. Eng., 1(1), 11–19.
Project Rep. (1978). “History and completion report of Ramganga project. Vol. I.” Irrigation Dept., Uttar Pradesh, India.
Soil Conservation Service (SCS). (1956). “Section 4: Hydrology.” National engineering handbook, supplement A, Chap. 10, Soil Conserv-tion Service, USDA, Washington, D.C.
Soil Conservation Service (SCS). (2004). ⟨http://www.wcc.nrcs.usda.gov/hydro/hydro-techref-neh-630.html⟩.
Simanton, J. R., Renard, K. G., and Sutter, N. G. (1973). “Procedures for identifying parameters affecting storm runoff volumes in a semiarid environment.” Rep. No. W-I, USDA, Agriculture Research Service, Washington, D.C.
Steenhuis, T. S., Winchell, M., Rossing, J., Zollweg, J. A., and Walter, M. F. (1995). “SCS runoff equation revisited for variable-source runoff areas.” J. Irrig. Drain. Eng., 121(3), 234–238.
Wight, J. R., and Skiles, J. W. (1987). “SPUR, simulation of production and utilization of rangelands.” Rep. No. AR-63, USDA Agric. Res. Services, Boise, Id.
Woodward, D. E., and Croshney, R. (1992). “Discussion of ‘Investigation of curve number procedure’ by Allen T. Hjelmfelt, Jr.” J. Hydraul. Eng., 118(6), 951–952.
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Published In
Journal of Irrigation and Drainage Engineering
Volume 133 • Issue 5 • October 2007
Pages: 475 - 486
Copyright
© 2007 ASCE.
History
Received: Nov 14, 2005
Accepted: Mar 22, 2007
Published online: Oct 1, 2007
Published in print: Oct 2007
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