A new compact model coupling rainfall-runoff and routing model to support reservoir releases management

The article proposes a model for integrated management of a regulated watershed. In such systems, it is important to take into account not only the discharge released at the reservoir, but also the natural flows due to rainfall. The proposed model incorporates both inputs, and can be refined by considering different numbers of sub-basins corresponding to tributaries of the river. We discuss the parameter identification and show that the validation is improved when the discharge transfer inputs are used in the model. These upstream discharge inputs correspond to reservoir releases in the case of a regulated watershed. The model is tested on data from the Tarn river in South-Western France.