A Flow Simulation Based on SWAT Model in Wohushan Reservoir Basin
Shengdong Zhang
Abstract
Shengdong Zhang
Abstract
In order to study the applicability of the SWAT model in small and medium-sized basins,the author installs DEM,land utilization database,soil database and climate database for the establishment of SWAT model based on 3S,and establishes distributed hydrological model in Wohushan Reservoir watershed.Then,the parameters were calibrated by observed flow from 2007 to 2009 and were validated from 2010-2011.The results show that the correlation coefficient and Nash coefficient of monthly runoff simulation were higher than 0.70,and the relative error was lower than 15%.Overall,the SWAT model functions well in the Wohushan reservoir watershed.
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In order to study the applicability of the SWAT model in small and medium-sized basins,the author installs DEM,land utilization database,soil database and climate database for the establishment of SWAT model based on 3S,and establishes distributed hydrological model in Wohushan Reservoir watershed.Then,the parameters were calibrated by observed flow from 2007 to 2009 and were validated from 2010-2011.The results show that the correlation coefficient and Nash coefficient of monthly runoff simulation were higher than 0.70,and the relative error was lower than 15%.Overall,the SWAT model functions well in the Wohushan reservoir watershed.
Key concepts: SWAT model, Watershed, Surface runoff, Hydrology (agriculture), Structural basin, Environmental science, Soil and Water Assessment Tool, Correlation coefficient