Abstract: The reservoir runof calculation plays an important role in designing the reservoir size，especially in the area without data recoded．A method using the curve of precipitation-runof relationship to calculate the runof is put forword．The method mainly requires making good use of hydrological data of adjacent areas，a few local data and the practical information of the complete water conservancy pmject in the area．Compared with the result of the traditional methods，the precipitation-runof relationship method educes more reasonable run of results．

Key words: water conservancy project, runof amount, calculation

摘要： 水库径流量的计算是关系到水库规模大小的一件很重要的工作，对于无资料地区的径流量计算更是一项很复 杂的工作．提出降雨径流关系法充分利用邻近的水文资料、本流域已有的少量资料以及本地区水利工程运行的实际 资料综合分析推导出径流量，并与传统计算方法所得结果进行比较，最终确定合理的径流计算成果．

关键词: 水利工程, 径流量, 计算