根据北京城市化水平（下垫面情况及排水条件）、城市汇流特点（雨水管道及明渠排水），通过用多点入流汇流计算法模拟实测洪水过程线，分析了北京城市河道的汇流特点与规律，初步提出了一种适合于北京城市洪水计算的方法，为城市防洪排水工程规划、设计提供了依据 According to Beijing’s urbanization level (underlying surface conditions and drainage conditions) and the characteristics of urban convergence (drainage of stormwater pipes and open channels), the process of actual measured floods is simulated by multi-point inflow convergence calculation method, and the characteristics and regularities of confluence of urban rivers in Beijing , Initially proposed a method suitable for Beijing urban flood calculation, which provided the basis for the planning and design of urban flood control and drainage project