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为确定土壤湿润之后达到稳定入渗率（fc）时的地表最大径流量（WR）而开发了一套程序。利用该程序可确定与地形和土壤保持体系特征相关的因子H，可用该因子计算水平梯田排水沟的蓄水深度。该方法适用于雨强─历时─频率关系已知的情况下。同时，列出了WR和因子H与fc有关的曲线图和公式。把用该方法计算的值与美国土壤保持局即USDA曲线族法所得值作了比较，并把fC和重现期对WR值的影响作了分析。
A procedure was developed to determine the maximum surface runoff (WR) at the time of reaching a steady infiltration rate (fc) after soil wetting. This procedure is used to determine the factor H associated with topographical and soil conservation system characteristics that can be used to calculate the water storage depth of horizontal terraced drainage ditches. This method is applicable when rainfall intensity-duration-frequency relationship is known. At the same time, lists the WR and factor H and fc-related graphs and formulas. The value calculated by this method is compared with the values obtained by the US Soil Conservation Authority, the USDA Family Law, and the impact of fC and the return period on the WR value is analyzed.