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dc.contributor.authorMishra, Surendra Kumar-
dc.contributor.authorSingh V.P.-
dc.identifier.citationHydrological Processes (2006), 20(13): 2755-2768-
dc.description.abstractThis paper investigates the variation of the popular curve number (CN) values given in the National Engineering Hand Book-Section 4 (NEH-4) of the Soil Conservation Service (SCS) with antecedent moisture condition (AMC) and soil type. Using the volumetric concept, involving soil, water, and air, a significant condensation of the NEH-4 tables is achieved. This leads to a procedure for determination of CN for gauged as well as ungauged watersheds. The rainfall-runoff events derived from daily data of four Indian watersheds exhibited a power relation between the potential maximum retention or CN and the 5-day antecedent rainfall amount. Including this power relation, the SCS-CN method was modified. This modification also eliminates the problem of sudden jumps from one AMC level to the other. The runoff values predicted using the modified method and the existing method utilizing the NEH-4 AMC criteria yielded similar results. Copyright © 2006 John Wiley & Sons, Ltd.-
dc.relation.ispartofHydrological Processes-
dc.subjectAntecedent moisture condition-
dc.subjectAntecedent rainfall-
dc.subjectCurve number-
dc.subjectSCS-CN method-
dc.subjectSoil Conservation Service-
dc.subjectUngauged watershed-
dc.titleA relook at NEH-4 curve number data and antecedent moisture condition criteria-
dc.affiliationMishra, S.K., Department of Water Resources Development and Management, Indian Institute of Technology, Roorkee 247667 UP, India-
dc.affiliationSingh, V.P., Department of Civil and Environmental Engineering, Louisiana State University, Baton Rouge, LA 70803-6405, United States-
dc.description.correspondingauthorMishra, S.K.; Indian Institute of Technology, Department of Water Resources Development and Management, Roorkee 247667 UP, India; email:
Appears in Collections:Journal Publications [WR]

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