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

Simon Munier (1) , Julien Lerat (2) , Gilles Belaud (1) , Xavier Litrico (1)

1 UMR G-EAU - Gestion de l'Eau, Acteurs, Usages
2 UR HBAN - Hydrosystèmes et Bioprocédés

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.

Mots clés: MODELISATION; MODELE PLUIE DEBIT; LACHER; GESTION DE RESERVOIR; GESTION DE L'EAU; TARN; FRANCE; INTEGRATED MODELLING; RAINFALL-RUNOFF; FLOW ROUTING; COMPACT MODEL

Domaines: Modélisation et simulation; Sciences de l'environnement; Milieux et Changements globaux; Hydrologie; Météorologie

Simon Munier, Julien Lerat, Gilles Belaud, Xavier Litrico. A new compact model coupling rainfall-runoff and routing model to support reservoir releases management. 13th IWRA World Water Congree 2008, Sep 2008, Montpellier, France. 16 p. ⟨hal-00468549⟩