FastFlood Docs

Multiple Areas

Using Multiple Areas

You can simulate multiple areas within one FastFlood model setup. Each of these has a separate set of input maps and settings. Mitigation features and discharge conditions are shared by default, but can be specified to work for only a single specific area. There are several use-cases for the multi-area feature.


  1. Multiple catchment automation
  2. Cascading resolution model domains

Multiple Catchment Automation

You can run multiple catchments in a single setup. In upcoming versions of the model, simulation automation will be possible, for setups such as calibration or rapid assessment.

Cascaded Resolution Model Domains

The second use-case for this feature occurs in the case of large simulation areas. Simulating large catchments can increase computation time for unnecessary detail over a large area. As a solution, one might set up a coarse-scale simulation for the larger area (e.g. catchment). This predicts hydrology and channel discharge. A second simulation area can then be set up with a discharge boundary condition that depends on the output of the catchment simulation.