Skip to content

FAQ/ Overlapping drainage target areas of drainage stations

When I tried to start the simulation calculation, the following dialog appeared: What does this mean?

The drainage target area overlaps. For overlapping areas, the drainage area set earlier is set preferentially.


DioVISTA allows a flood model cell to belong to the drainage zone of a single drainage station. Therefore, a flood model cell cannot belong to a drainage zone of two or more drainage stations.

For areas where drainage areas overlap, priority is given to the previously set drainage area. "Drainage area set earlier" refers to the drainage area that appeared first in the Project pane on the left side of the screen.

For example, the last drainage area set is the lowest priority drainage area for treatment.

Last update: 2023-03-17