Create Thiessen Subcatchments Dialog

The Create Thiessen Subcatchments Dialog is used when Creating Subcatchment Boundaries using the Thiessen Polygon method.

The dialog is displayed when Subcatchment | Create within selected polygon is selected from the Model menu.

Option	Description
Using nodes from selection with system type:	Select system type for which subcatchments will be created.
Selection List	Include a Selection List, or click # to include the current selection. This will limit the boundary creation to the selected nodes. By default all nodes will be processed.
Update Existing Subcatchments	Check this option to replace existing boundaries. If this option is left unchecked, any node with an existing subcatchment of the chosen type will be ignored