An improved AMC-coupled runoff curve number model

作者：Sahu Ram Kumar; Mishra S K; Eldho T I^*

来源：HYDROLOGICAL PROCESSES, 2010, 24(20): 2834-2839.

DOI：10.1002/hyp.7695

• antecedent moisture
• curve number
• SCS
• rainfall-runoff modelling

In the Soil Conservation Service Curve Number (SCS-CN) method, the three levels of antecedent moisture condition (AMC) permit unreasonable sudden jumps in curve numbers, which result into corresponding jumps in the estimated runoff. A few recently developed SCS-CN-based models obviate this problem, yet they have several limitations. In this study, such a model incorporating a continuous function for antecedent moisture has been presented. It has several advantages over the other existing SCS-CN-based models. Its application to a large dataset from US watersheds showed to perform better than the existing SCS-CN method and the others based on it.

• 出版日期2010-9-30