The inflows to a Pool are specified using the Inflows tab:
You can add Inflows by pressing the Add button. A browser tree showing all of the elements in the model will be displayed. Note that this tree is organized by containment in the same manner as the main browser. To insert a link from this dialog, you select a specific output (or an element having a primary output), and then press OK. If you press Cancel, GoldSim will insert a new blank (zero) item. In either case, the dialog will close and the item will be added to the list Inflows:
Inflows can be deleted using the Remove button moved up and down in the list using the two buttons to the right of the Remove button.
Inflows can be specified as constants or expressions and/or links, and may change with time. All Inflows must be non-negative values. Negative values for these inputs during a simulation will result in a fatal error.
Note: The specified Inflows represent constant rates over the
next timestep. Hence, if an Inflow was defined as “if(time > 10
day, 2 m3/day, 1 m3/day)”, and you were using a 1 day
timestep, the rate would not actually change to 2 m3/day until time =
11 days. That is, since at time = 10 days, the if statement indicates that the
rate is equal to 1 m3/day, GoldSim would assume that the rate was
equal to 1 m3/day between 10 days and 11 days. If you wanted the rate
to change at 10 days, you would write the if statement as “if(time >= 10 day,
2 m3/day, 1 m3/day)”.