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Evaluation of the SCS-CN-based model incorporating antecedent moisture

Author:
Mishra, S.K., Jain, M.K., Singh, V.P.
Source:
Water resources management 2004 v.18 no.6 pp. 567-589
ISSN:
0920-4741
Subject:
watershed hydrology, hydrologic models, rain, runoff, soil water content, agricultural watersheds, United States
Abstract:
Using a large set of rainfall-runoff data from 234 small to large watersheds from USA, this paper evaluates the modified version of the [Mishra, S. K. and Singh, V. P., 2002a, SCS-CN-based hydrologic simulation package, in V. P. Singh and D. K. Frevert (eds), Mathematical Models in Small Watershed Hydrology, Water Resources Publications, Chap. 13, pp. 391-464] (MS) model which is based on the Soil Conservation Service Curve Number (SCS-CN) methodology and incorporates the antecedent moisture in direct surface runoff computations. Comparison with the existing SCS-CN method using the t-test and the ranking-based grading shows that the modified MS model performs far better than the existing SCS-CN model.
Agid:
676570