Modeling the Quality and Quantity of Runoff in a Highly Urbanized Catchment Using Storm Water Management Model
Chunlin Li1,2, Miao Liu1, Yuanman Hu1, Jiping Gong1,3, Yanyan Xu1,3
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1Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016, China
2Key Laboratory of Pollution Ecology and Environmental Engineering, Institute of Applied Ecology,
Chinese Academy of Sciences
3University of Chinese Academy of Sciences, Beijing 100049, China
Publish date: 2016-07-22
Submission date: 2015-06-03
Final revision date: 2015-11-19
Acceptance date: 2015-11-24
Pol. J. Environ. Stud. 2016;25(4):1573–1581
As urbanization increases, urban runoff becomes an increasingly more important component of urban non-point pollution. In this study, the Storm Water Management Model was used to simulate the quantity and quality of runoff in a highly urbanized catchment. Data from three rainfall events were collected and used for model calibration and validation. Model performance was assessed using the Nash-Sutcliffe coefficient, relative error, and coefficient of determination. The modified Morris screening method was used for local sensitivity analysis. Sensitivity analysis results showed that the destore imperv and condit roughness parameters had the most influence on the hydrology and hydraulic module. Road exponent was the most sensitive parameter in determining TSS quantity and peak concentration. The calibration and verification results indicated that the model structure and parameters fitted the runoff-producing pattern. The total simulation accuracies of TSS, TN, TP, and COD loads, as assessed by the R2 value, were 0.82, 0.87, 0.72, and 0.94, respectively.