相关图洪水预报方法长期应用于水情预报作业,具有很高的实践意义。在以往人工编制方案中,由于存在数据处理量大、花费人工多、编制时间长等缺点,约束了它的推广应用,随着计算机技术的快速发展,相关图洪水预报方法变得简单可行。以江门潮位站为例,说明相关图法在上下游洪峰相关水位预报过程中的应用。 Relevant figures Flood forecasting method has long been applied to hydrological forecasting, which is of high practical significance. Due to the shortcomings of large data processing, labor-intensive and long preparation time, the conventional artificial programming has restricted its popularization and application. With the rapid development of computer technology, the relevant figure flood forecasting method becomes simple and feasible. Taking Jiangmen tidal station as an example, this paper illustrates the application of the related plot method in forecasting the flood level of the upper and lower reaches.