Author(s): Huang Guoru; Wang Linli; Hu Heping
Linked Author(s):
Keywords: River-basin system; Rainfall-runoff; NAM model; Channel floodrouting; Diffusive wave; Kinematic wave
Abstract: This paper mainly presents a flood forecasting model of the West River of the Pearl River Basin. The model is made up of two parts based on the principles of flood forecasting for river-basin system. One is the rainfall-runoff model, and the other is the channel flood routing model. The rainfall-runoff is simulated using the NAM model, and it may be used for any type basin of the producing runoff. The channel flood routing is modeled by the diffusive wave difference method. The method has itself some forecast period based on the concept of the numerical dispersion of the difference solution to the linear kinematic wave equation simulating the physical dispersion of the diffusive wave in certain condition. Years of observed data are used to calibrate the model parameters, and other observed data is used for the model verification. Good results have been obtained in calibration and verification of the model. The model has been applied to the operational flood forecasting at the Wuzhou station.
Year: 2001