SWMM（Storm Water Management Model）模型是一个动态降雨-径流模拟计算机程序，是城市区域径流水量和水质的单一事件或者长期（连续）模拟的一个有效工具。通过构建南京市秦淮区SWMM模型模拟分析城市不同重现期暴雨情景下的管网节点积水情况，选用淹没积水深度和淹没时长两个因素划分内涝风险等级，运用ArcGIS空间插值分析工具对研究区内涝风险进行分析，并建立城市暴雨内涝风险空间分布的直观表达。研究结果表明：研究区风险高值出现在南部“机场河-响水河圩区”、东部“青年河、安江河圩区”、西部老城区“双塘、大光路和瑞金路街道”三处。

The SWMM ( Storm water) model is a dynamic rainfall－runoff simulation computer program，which is an effective tool for single event or long－term ( continuous) simulation of runoff water quantity and water quality in urban areas． By constructing the Nanjing Qinhuai District SWMM model，this paper simulates and analyzes the water accumulation of pipe network under different rainstorm scenarios，selects two factors of submerged water depth and submerged time to divide the risk level of waterlogging，and uses ArcGIS spatial interpolation analysis tool to analyze the risk of waterlogging in the study area and establishes the visual expression of the spatial distribution of urban rainstorm waterlogging risk． The results show that the high risk value of the study area appears in the southern“Airport Ｒiver－Xiangshui Ｒiver Wei District”，the Eastern“Youth Ｒiver，AnnＲiver Wei District”，the Western Old Town“Double Pond，Tai Light Ｒoad and Ｒuijin Ｒoad Street”．