Application of SCS-CN Model in Runoff Estimation

摘要

Runoff calculation is an important part of regional runoff forecast and water resources evaluation model. The Soil Conservation Service (SCS) curve number (CN) model developed by the U.S. Department of Agriculture National Resources Conversion Service (NRCS) is the most popular and widely applied model for direct runoff estimation. This article will introduce the basic principles of SCS model, review and summary the application, development and improvement of the model, points out the shortcomings of the existing model. Finally, prospects for the future development of this model are conducted.