AN URBAN FLOOD DYNAMIC SIMULATION MODEL WITH GIS

摘要

An advanced model, Urban Flood Dynamic Simulation Model (UFDSM), has beenrndeveloped. The UFDSM is a GIS-based distributed hydrological model, both surfacernflow and sewer flow are taken into account. The spatial and temporal distribution ofrnthe flooding water stage and flooding water flux are calculated. Therefore, therninundation area, flooding duration, flood hazard map, and the flood risk managementrncan be analyzed through the UFDSM. Meanwhile, it presents the implementation ofrngeographic information system (GIS) technology in UFDSM. It shows the steps ofrnacquiring, storing, updating, analyzing, and displaying these data in conjunction withrnUFDSM. The viability of the UFDSM/GIS linkage in a microcomputing environment isrndemonstrated on a case study area in the Liuhuahu subdivision in Guangzhou City,rnChina.