According to the application of hydrologic model based on GIS technology is becoming more and more wide-spread.Aiming at the polder region,this paper puts forward the corresponding hydrologic model establish-ment and simulation method,simulates the hydrologic process in polder by coupling SWAT and SWMM mod-els,and analyzes the application direction of hydrologic model in solving the problems of waterlogging risk,pollutant diffusion and water environment management in polder region.
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