In the current context of climate change uncertainties, improving flood resilience of urban territories is a real challenge. Urban technical networks (water conveyance, sewage system, waste management, electricity supply…) have a central position in the capacity of urban territories to recover quickly after a flood. Indeed, they participate in their organisation because they supply, unify and irrigate the entire city. As a result, they can spread the crisis to other urban territories' components. This strategic position makes them extremely influential in the urban territories' development. In this context, waste management during and after floods is crucial. In addition to its visual and psychological impacts, waste management network raises strategic problems of salubrity or public health. During a flood, the waste management network can become dysfunctional (blocked road, flooded waste storage or waste treatment installations). How can the mayor respect his obligation to guarantee salubrity and security in his city? After a flood, the waste volume generated can be significant and different in its nature (mixed, wet, polluted). What to do with this waste? How to collect it? Where to stock it? How to process it? Who is responsible? Answering these questions is all the more strategic since these waste are the mark of a disaster. The waste management network represents a real stake for the restart of the territory. Therefore, this characterization of flood resilience may prove to be interesting in order to improve the flood resilience of urban territories.