A distributed model for real-time flood forecasting using digital elevation models

摘要: A distributed model for real-time rainfall-runoff simulation during floods is presented. The model, called Distributed Basin Simulator (DBSIM) based on the detailed topographical information provided by Digital Elevation Models (DEM). representation uses rectangular grid of DEM. Soil properties, input data and state variables are also represented as layers using same scheme. rainfall used to map topographically driven evolution saturated areas storm progresses. applies a kinematic infiltration evaluate local runoff generation in elements accounts lateral moisture flow between surface routing simplified manner. Model performance evaluated through sensitivity analyses an exercise calibration verification.