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2013•Applied Mechanics and MaterialsOpen access

The Flow Simulation Based on SWAT Model in Wohushan Reservoir Basin

Yang Shan, Zhenghe Xu, Kong Ke

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Abstract

In order to study the applicability of SWAT model in small and medium-sized basin, the author established SWAT model to simulate monthly runoff in Wohushan Reservoir basin. According to a lot of basic data, the spatial database and the attribute database were constructed. The entire study area was divided into 51 catchments including 126 hydrological response units. The parameters were validated by the measured data from 2007 to 2009 and calibrated from 2010 to 2011. The correlation coefficient and the Nash efficiency coefficient of monthly runoff simulation are higher than 0.70, and the relative error is lower than 15%. Considering some potential errors between the measured data and the simulated data, SWAT model can simulate the runoff process of Wohushan Reservoir basin well.

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What this paper is about

In order to study the applicability of SWAT model in small and medium-sized basin, the author established SWAT model to simulate monthly runoff in Wohushan Reservoir basin. According to a lot of basic data, the spatial database and the attribute database were constructed. The entire study area was divided into 51 catchments including 126 hydrological response units. The parameters were validated by the measured data from 2007 to 2009 and calibrated from 2010 to 2011. The correlation coefficient and the Nash efficiency coefficient of monthly runoff simulation are higher than 0.70, and the relative error is lower than 15%. Considering some potential errors between the measured data and the simulated data, SWAT model can simulate the runoff process of Wohushan Reservoir basin well.

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Available abstract

In order to study the applicability of SWAT model in small and medium-sized basin, the author established SWAT model to simulate monthly runoff in Wohushan Reservoir basin. According to a lot of basic data, the spatial database and the attribute database were constructed. The entire study area was divided into 51 catchments including 126 hydrological response units. The parameters were validated by the measured data from 2007 to 2009 and calibrated from 2010 to 2011. The correlation coefficient and the Nash efficiency coefficient of monthly runoff simulation are higher than 0.70, and the relative error is lower than 15%. Considering some potential errors between the measured data and the simulated data, SWAT model can simulate the runoff process of Wohushan Reservoir basin well.

Key concepts: SWAT model, Surface runoff, Structural basin, Hydrology (agriculture), Environmental science, Correlation coefficient, Geology, Geotechnical engineering

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