Real-Time Flood Warning System Application

The reliability of weather radar data in real-time flood forecasting and early warning system remain ambivalent due to high uncertainty Quantitative Precipitation Forecasts (QPF). In this study, a methodology is presented with the objective improve results application rainfall calculated three different ways. QPF forecast four typhoon events Fèngsh?n River Basin, Taiwan, were simulated using WASH123D numerical model. corrected physical correction technique compared direct simulation without for all calculation methods. According model performance evaluation criteria, third method calculation, peak error was lowest methods, indicating better can be used systems. impact assessed mass balance analysis. It found that flow change between 16% 42% from simulation, being on safe side case warning. However, water level itself reasonable range. Still, correction/calculation more important obtain accurate forecasting. Therefore, correct has certain degree credibility, which This approach recommended