Storm Water Management Model (SWMM) is a widely used urban rainwater simulation and analysis software, the sub-catchment is the basic calculation unit in the SWMM model. Through the analysis of the rainfall runoff hydrological conceptual model, runoff yield and concentration mathematical model for SWMM sub-catchment, some suggestions on parameter assignment are put forward the application. In order to solve the problem of sub-catchment width value assignment，this paper proposes to take the length of the overland flow path as the basic method to calculate the width of the sub-catchment area, and to calculate the length by weighting the length of sub-catchment concentration.
宋新伟, 高玉兰, 沈冬梅, 涂有笑. SWMM子汇水区产汇流水文概念模型及参数赋值研究 [J]. 兴发pt登录学报, 2019, 36(7): 61-66. SONG Xinwei, SHEN Dongmei, GAO Yulan, Tu Youxiao. Study on Hydrological Conceptual Model and Parameter Assignment of SWMM Sub-catchment . Journal of Jilin Institute of Chemical Technology, 2019, 36(7): 61-66.