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About Nodes
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| The following nodes are not available in Source (public version): Off-allocation and Transfer Ownership. |
Nodes represent places where actions or measurements occur in a river system, where water can be added, extracted, stored, recorded, or change ownership in a model. A node can be used to represent things that actually happen over a large physical area but that, for modelling purposes, occur at a single point. In sub-catchments, they provide a position in the catchment network where water management information can be placed. In Source, nodes are depicted using the icons shown in Figure 1.
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| Note: This section describes how nodes can be configured in Source. For the scientific background behind their operation, refer to the Source Scientific Reference Guide. |
Figure 1. Source node icons
Using nodes in Source
This section outlines how to work with nodes in Source. Some actions can be duplicated for links.
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| Note: Once added to a scenario, nodes can be viewed and their parameters edited using Feature Table. |
About Links
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Links connect nodes in Source - they link, store and route water passing between nodes. Nodes are connected using links only, and two links cannot be connected to each other without an intervening node.
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Table 1. Link types in Source
| Type of link | Used to connect | Representation in Schematic Editor | Example |
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| Demand link | Supply point (source) and water user (target) nodes only | Red, dashed line |  |
| Lagged flow routing | Various nodes | Black line, with alternating dots and dashes |  |
| Storage routing | Various nodes | Black, solid line |  |
| Straight through routing | Various nodes | Black, dashed line |  |
| Wetland link (Horizontal) | Wetlands Hydraulic Connector node (source) and the Storage node (target) only | Green, solid line | Shown in Figure 2 |
Using links in Source
Once links have been added a model, you can edit several attributes in a similar fashion as for nodes:
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Figure 2. Renaming a node or link
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Note: Source does not support duplicate names for nodes or links and will warn you if there is one. You must ensure that the names you choose are unique to the scenario. |
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Deleting nodes can be achieved simply by selecting the node and pressing the delete key, or by right-clicking it and choosing Delete from the contextual menu. Deleting a link removes only the link. Deleting a node removes both the node and any links that were attached to the node.
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