The Water User object simulates the consumption and depletion of water, often from a reservoir or reach. A Water User object can exist as a standalone object on the workspace, or as an element of the Aggregate Diversion Site (Agg Diversion Site) object.

When the Water User object is an element of an Agg Diversion Site, the link structure selected on the Agg Diversion Site determines how the Water User elements interact with each other, the Agg Diversion Site, and the object from which water is being diverted (that is, Reach or Reservoir).

When the Water User is a standalone object on the workspace, it functions in the same manner as an element on an Agg Diversion Site using the default, No Structure, linking structure.

Three linking structures exist on the Agg Diversion Site object.