ABSTRACT:Four methods of determining rainfall‐excess are considered. They include Ø‐index and equations of Horton, Kostyakov and Philip. These methods are utilized in a nonlinear kinematic wave model to predict surface runoff from two natural agricultural watersheds. The effect of determining rainfall‐excess on surface runoff response is then examined. It is observed that errors in rainfall‐excess constitute a major source of error in runoff prediction. The choice of a method of determining rainfall‐excess is thus crucial to runoff c
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机译：摘要：考虑了四种确定降雨量过剩的方法。它们包括 Ø 指数和 Horton、Kostyakov 和 Philip 的方程。这些方法用于非线性运动波模型中，以预测两个天然农业流域的地表径流。然后研究了确定降雨过量对地表径流响应的影响。据观察，降雨过剩误差是径流预测误差的主要来源。因此，确定降雨量过剩的方法的选择对径流至关重要。
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