Digital Twin of Large River Section with Urbanized Floodplain

Some features of building a digital twin (DT) for analyzing the hydrological state of river systems and adjacent floodplain areas are discussed. The Northern part of the Volga-Akhtuba floodplain is used as the test site. Two main components determine the quality of the digital twin. The first includes a set of basic spatially distributed landscape characteristics that affect the hydrological regime. Geoinformation tools ensure the operation of such a module. The second component is a computing kernel for modeling the dynamics of surface water and groundwater together with the transport of sediments of different types. Validation of the digital twin is based on the agreement of the modeling results with instrumental measurements over long time intervals of about a year. Such a DT can be an effective tool, for example, for constructing cadastral maps of flooded areas.