Integrated Forecast Storage Management and Flood Warning System in urban catchments and small watersheds Système intégré de gestion des stockages et d'alerte de crues dans les bassins versants urbains et les petits bassins versants

Intense rainfall events are a major cause of flooding problems in urban and non urban areas. Due to increased sealing of areas high runoff volumes are the result. Especially in urban areas and small catchments the time interval between rainfall event and flood peak can be very short. This paper describes the integrated hydraulic precipitation runoff modelling system STORM.Control using predicted rainfall data to manage urban water systems and/or whole water sheds in non urban areas. It gives the opportunity to integrate an alarm system for civil protection forces to react in short time period and prevent relevant constructions from damages or flooding. Coupling virtual and measured data enables steering of storages in order to lower peak flows in sewers and water courses. The system is using the open GIS SOS standard for data collection and delivering. A web based Viewer HydroWebView is enabling “real time viewing” of the data in the sewer and river system. Further measurements in the sample catchments will be done in order to validate and improve the approach.