Numerical Modeling of Channel Processes and Hydraulic Engineering Impact on the River Amur

The analysis of water flow and sediment transport under the influence of hydrotechnical construction on the river Amur near Blagoveshchensk and Heihe cities was carried out, based on two-dimensional hydrodynamic modeling using STREAM_2D software (author V. Belikov et al., Russia). Two modeling scenarios were considered: with the complex of dams near the Chinese island of Big Heihe and without. Placing of dams providing the concentration of the flow in the main river channel, increasing erosion in the mainstream below the confluence near the left bank.