Losses in a river system can be represented in several ways. Some losses, such as reach evaporation, loss to groundwater and filling of dead storage can be simulated through a link. The loss node can be used to represent losses which are not captured by such explicit models. In Source, the loss node allows you to define a relationship between river flow and loss rate.
Loss node (Loss Characteristics)
A piecewise linear function can be entered by hand or loaded from a .CSV file. Table 4 shows the format of a comma-separated-value file for importing loss data. It is advised that you enter a flow rate relationship greater than the likely maximum simulated flow. If you do not, the linear relationship derived from the last two rows of the loss table will be used to calculate any projections. Refer to About piecewise linear editors for more information.
Ownership can also be selected in the loss node. Refer to the Ownership chapter.
Loss node (data file format)
Row | Column (comma-separated) | |
|---|---|---|
1 | 2 | |
1 | Inflow (ML/d) | Loss (ML/d) |
2 | 0 | 0 |
3..n | inflow | loss |
Where: inflow is an inflow measured in megalitres per day
loss is the loss in megalitres per day corresponding with the associated level of inflow.