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Create node(s) for farm dams in a Source model
Modelling farm dams in Source is more commonly undertaken as part of a catchment model, where sub-catchment flows provide the inflows to each farm dam node. However, the farm dam node is available from the Node palette and can also be used in a schematic river system model. The creation of a farm dam node (1) in a river system model from the Schematic Editor and (2) in a catchment model from the Geographic Editor, is different. The methods for both models are described separately below:
(1) From the Schematic Editor
The green triangle icon 
on An onstream farm dam node is represented in the Node Palette represents the onstream farm dam. Dragging the as a green triangle . Dragging the node icon from the Node Palette to the Schematic Editor interface can create will drop a farm dam node . The accurate in an existing Source model. This node can then be manually linked to other nodes in teh model as needed. Accurate coordinates of farm dams’ positions are not required, but can be entered through the Source Feature Table if required.
(2) From the Geographic Editor
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From the Geographic Editor
Onstream farm dam nodes can be applied to a catchment model from the Geographic Editor individually or in bulk:
a. Change
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a single existing model element in a Source catchment model to an onstream farm dam
The first step is to select an existing model element (e.g., a Confluence node) and right. Right-click on it, and the selected node to display the context menu then will be displayed. Clicking Click on the menu item of Change Node Model (step 1 in Figure 2) on the context menu will to display the an additional context menu, and further clicking on the . Select the Onstream Farm Dam option (step 2 in Figure 2) will to change the node to an Onstream Farm Dam that is displayed as a green triangle icon. The user can use the menu item of Add Node (. If there is no existing model element, the Add Node option (step 3 in Figure 2) can be used to add a Confluence node for subsequent node model change if needed. The accurate coordinates of farm dams’ positions may not be essentialchanges.
Figure 2 Modeling Onstream Farm Dam node from Geographic Editor
b. Bulk Change Node Models for onstream farm dams
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Right-clicking on any place in the Geographic Editor model interface of Geographic Editor will display a context menu, which includes the menu item the Bulk Change Node Model menu item (step 4 in Figure 2). This menu item allows the user to bulk change a group of nodes to onstream farm dams at once. The procedure is as follows:
- Prepare a location shapefile of the nodes for the fam dams - These locations should be already used during the model building and exist as nodes in the catchment model.
- Open Bulk Change Node Models editor - Clicking on the menu item Bulk Change Node Model will show the interface of the Bulk Change Node Models editor (Figure 3). Initially, the contents in the Nodes Located box and the selected item in the dropdown list of destination node types are empty.
- Configure Bulk Change Node Models editor - Clicking on the button of Load node location shape file (Figure 3) will display the Open dialogue box, which allows the user to select the prepared location shape file. After the user clicks on the OK button on the Open dialogue box, the node names (e.g. 156, 157) in the Source model will be displayed in the Nodes Located box, and those nodes have the exact locations defined in the shapefile. The user must select Onstream Farm Dams from the dropdown list below the Nodes Located box.
- Convert the selected nodes to destination node type – Clicking on the button of Change all loaded nodes in Figure 3 will convert all nodes in the Nodes Located box to the selected node type in the dropdown list (e.g. Onstream Farm Dams in Figure 3).
- The user can repeat the above steps to convert nodes to other types. Otherwise, clicking on the Done button can close the window.
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