SWAT Literature Database for Peer-Reviewed Journal Articles

Title:Two model performance comparisons with multisite observations based on uncertainty methods for modeling hydrologic dynamics 
Authors:Zhang, J., X. Lei and Q. Li 
Journal:Journal of Irrigation and Drainage Engineering 
Volume (Issue):144(1) 
Article ID:04017060 
URL (non-DOI journals): 
Broad Application Category:hydrologic only 
Primary Application Category:model and/or data comparison 
Secondary Application Category:calibration, sensitivity, and/or uncertainty analysis 
Watershed Description:930 km^2 Peace River, located in central Florida. 
Calibration Summary: 
Validation Summary: 
General Comments: 
Abstract:The HSPF [Hydrologic Simulation Program—FORTRAN (Computer software). EPA National Exposure Research Laboratory, Athens, Georgia] and SWAT [Soil and Water Assessment Tool (Computer software). USDA Agricultural Research Service and Texas A&M AgriLife Research, Temple, Texas] models are often used to assess hydrological processes in a shallow water table setting. In the paper, these two models are evaluated and compared for accuracy in simulating runoff to the Peace River Basin in Central Florida, based on the generalized likelihood uncertainty estimation (GLUE) method. Both models performed reasonably well in predicting daily streamflow in three gauges with acceptable R2 values (0.66–0.85) and Nash-Sutcliffe’s Ens (0.60–0.76) with reasonable P and R factors. The parameter sensitivity was quantified, and the GLUE method involved Monte Carlo sampling over feasible spaces of calibration parameters. The parameter pairwise correlation is investigated, as well as the uncertainties along with equifinality. The results indicate that HSPF and SWAT models performed satisfactorily after the calibration and the parameters of both models are identified with considerable uncertainty. 
Keywords:Uncertainty; Generalized likelihood uncertainty estimation (GLUE); Sensitivity analysis; Hydrologic Simulation Program—FORTRAN (HSPF); Soil and Water Assessment Tool (SWAT); Shallow water table runoff.