Author(s): Mengyan Shen; Miaomiao Ma; Zhicheng Su; Xuejun Zhang

Linked Author(s):

Keywords: Baihe River basin; Streamflow simulation; SWAT model

Abstract: The Middle Route of the South-to-North Water Diversion Project is not only the lifeline project, but also the main skeleton project of the National Water Network. Therefore, it is of great significance to predict the streamflow in the controlled area of the Baihe Hydrological Station, which is the upstream inflow control station of the Danjiangkou Reservoir, to maintain the water supply security of the Middle Route of the South-to-North Water Diversion Project and promote the sustainable economic and social development in northern China. This paper used the data of 18 meteorological stations around and within Baihe River basin and Baihe hydrological station, combined with DEM data, land use data and soil data to build a SWAT model suitable for the Baihe River basin and conduct daily scale simulation. The results show that the SWAT model has good applicability in the streamflow simulation of the Baihe River basin. NSE, R2, and PBIAS were 0.77, 0.79, and 19.5%, respectively, during the calibration period (2001~2004), and 0.63, 0.64, and 15.3%, respectively, during the validation period (2005~2008). At the same time, the low precision during the validation period could be due to the neglect of reservoir operations.

DOI: https://doi.org/10.64697/HIC2024_P572

Year: 2024