Inundation Model J2000-Flood
Please note: UNDER CONSTRUCTION!
A floodplain simulation extension, characterized as a conceptual and easily transferable approach that is simultaneously not overly data and resource intensive, as well as easily parameterizable, was developed and integrated into the modelling process of the J2000 modelling system. This extension was developed with the goal of simulating wetland inundation within the model. Due to the data scarcity typical of remote catchments, the extension's parameters (HRU elevation and river width) could be obtained from remote sensing data only.
On an iterative basis the water height in each river segment is compared to the elevation of its neighboring HRU. In case flooding occurs, the HRU floods its topological connected model entities, until the flood level is too low to spread any further. Technically the distributed water volume is stored in the exceeded depression storage, which interacts with soil and atmosphere.
Fig.: Schematic concept of a J2000(-Flood) model (left) including the inundation extension (right)
Applying the J2000-Flood model
- Replace the JAMS component StandardEntityReader with the StandardEntityReaderUpstreamTopo, which adds a two-directional linkage between entities to define flood direct from each river segment. - Add the component flooding.SubbasinFlooding at the ende of the ReachLoop. In case of overflow of a river segment this component iterates over (elevation-sorted) HRUs and distributes the water as described above.
