RiverWare has three types of aggregate object (AggObjects): t

The aggregate object manages the linking structure of its elements and may also manage the solution methods for the elements. The AggDiversionSite has object solution methods independent of the behavior of its elements and may, therefore, stand alone.

The Open Object dialog for the AggObjects contains tree-views for both the Slots and Methods displays, where element objects are added and accessed. Also, the main menu bar has two additional items, Elements and Link Structure (the Link Structure item is not available for AggReaches or AggDistributionCanals). The first item listed is always the Aggregate Object itself. The remaining items (below the Aggregate Object) are the elements.

The slots or methods specific to the element objects are viewed in the lower portion of the Open Object dialog by selecting the tree-view triangle to the left of the element name. If the Open Object dialog is in the Slots display, the tree-view shows the slots associated with the elements. If Methods is selected, the tree-view shows the method categories for the elements, if any exist.