Multi-hydro hydrological modelling of a complex peri-urban catchment with storage basins comparing C-band and X-band radar rainfall data

Auguste Gires (1) , Igor da Silva Rocha Paz (1) , Abdellah Ichiba (1) , Bernard Willinger (2) , Auguste Gires (1) , Jose Carlos Cesar Amorim , Marcelo de Miranda Reis , Bruno Tisserand (3) , Ioulia Tchiguirinskaia (1) , Daniel Schertzer (1)

1 HM&Co - Hydrologie, Météorologie et Complexité
2 Veolia Eau (Paris)
3 VeRI - Veolia Recherche & Innovation

The spread of impervious surfaces in urban areas combined with the rise in the intensity of rainfall events as a result of climate change has led to dangerous increases in storm water flows. This paper discusses a new implementation of the fully distributed hydrological model Multi-Hydro (developed at École des Ponts ParisTech), when operating storage basins, and its ability to deal with high-resolution radar rainfall data. The peri-urban area of Massy (south of Paris, France) was selected as a case study for having six of these drainage facilities, used extensively in flood control. Two radar rainfall datasets with different spatiotemporal resolutions were used: Météo-France's PANTHER rainfall product (C-band) and ENPC's X-band DPSRI. The rainfall spatiotemporal variability was analysed statistically using Universal Multifractals (UM). Finally, to validate the application, the water level simulations were compared with local measurements in the Cora storage basin located next to the catchment's single outlet.

Domaines: Sciences de l'environnement; Ingénierie de l'environnement; Planète et Univers [physics]; Sciences de la Terre; Hydrologie

Auguste Gires, Igor da Silva Rocha Paz, Abdellah Ichiba, Bernard Willinger, Auguste Gires, et al.. Multi-hydro hydrological modelling of a complex peri-urban catchment with storage basins comparing C-band and X-band radar rainfall data. Hydrological Sciences Journal, 2018, 63 (11), pp.1619-1635. ⟨10.1080/02626667.2018.1520390⟩. ⟨hal-02058044⟩