Comparison of Several Flood Forecasting Models in Yangtze River

K. W. Chau, C. L. Wu, Y. S. Li
2005 Journal of hydrologic engineering  
In a flood-prone region, quick and accurate flood forecasting is imperative. It can extend the lead time for issuing disaster warnings and allow sufficient time for habitants in hazardous areas to take appropriate action, such as evacuation. In this paper, two hybrid models based on recent artificial intelligence technology, namely, genetic algorithm-based artificial neural network (ANN-GA) and adaptive-network-based fuzzy inference system (ANFIS), are employed for flood forecasting in a
more » ... casting in a channel reach of the Yangtze River in China. An empirical linear regression model is used as the benchmark for comparison of their performances. Water levels at downstream station, Han-Kou, are forecasted by using known water levels at the upstream station, Luo-Shan. When cautious treatment is made to avoid overfitting, both hybrid algorithms produce better accuracy performance than the linear regression model. The ANFIS model is found to be the optimal, but entails a large number of parameters. The performance of the ANN-GA model is also good, yet requires longer computation time and additional modeling parameters.
doi:10.1061/(asce)1084-0699(2005)10:6(485) fatcat:xrxfmt6aafaynlu2o3dli7otjq