The project is aimed at extending sections of watercourses with a defined flood area. The project deals with the processing of documents for the determination of flood area and threat maps within the territorial scope of the state enterprise Povodí Labe. It consists of 605.4 km of watercourses in the sub-water catchment area of the Upper and Central Elbe and 41.1 km of watercourses in the sub-water catchment area of Lusatian Nisa and other tributaries of the Odra.