Abstract
Many parameters in hydrological models cannot be measured directly and should be estimated through calibration. In this study, four separate calibration schemes, including a multi-gauge and three single-gauge ones, were conducted to simulate the daily stream flow of the Upper Daning River in China's Three Gorges Reservoir Region using the Soil and Water Assessment Tool (SWAT). A highly efficient calibration technique – the Sequential Uncertainty Fitting version-2 (SUFI-2) procedure – was utilized in the calibration and validation. Results indicated that all four schemes could obtain satisfactory parameter sets, and there were no obvious differences between the simulation results obtained by the multi- and single-gauge calibration schemes in terms of Nash–Sutcliffe efficiency value (ENS). This might be attributed to the uniformly distributed land uses, similar topography variations and the low resolution of soil type map of the study area.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
