Abstract

It is quite important of flood forecasting all long. However, in the Yellow River which is famous for soil and water loss and hyper-concentration flow, sediment, accompanied with flood, has as important position as that of water flow itself. To discuss the way of forecasting water and sediment discharge, there are 3 steps in this paper to explain this issue. Firstly, the mechanics of water and sediment processes is analyzed. And then, according to the analysis of mechanism, simulation models corresponding to the sub-processes are set up on the digital watershed platform. Finally, the application of water and sediment forecast in the middle and lower Yellow River is achieved.

Keywords: Digital Watershed Model, the Loess Plateau, flow and sediment process, forecast