Figure 1

Location of the Yellow River (YR) basin and annual streamflow of the YR in the past six decades. (a) The pentagrams represent the control gauging stations of the source regions (SR), upper reaches (UR), middle reaches (MR) and lower reaches (LR), and the crosses represent the main reservoirs on the YR. (b) The time series of annual streamflow at Tangnaihai station and Lijin station, the unit of slope is 108 m3. New (prepared by YW in ArcMap 10.2, https://www.esri.com/zh-cn/arcgis/products/arcgis-pro/resources).