The Geographic Editor shows a geographic representation of the catchment model, and displays the sub-catchment map and the node-link network of the current scenario.

Figure 1. Geographic Editor contextual menu

Several commands are available when you right-click in the Geographic Editor (Figure 1):

Pan allows you to click the geographic representation of the model and move it up or down, left or right;
Zoom In allows you to left-click and drag the mouse to define an area to zoom into. Undo Zoom allows you to undo this action. To zoom all the way out, double-click the geographic view anywhere outside a sub-catchment; These zoom actions are synonymous to using the zoom icons in the Geographic Editor toolbar.
Select allows you to select a node, link, sub-catchment, etc on the map by clicking it;
Draggable allows you to drag the map and drop it onto another map, to overlay the two maps;
Add node allows you to add a node to the model;
Add Link allows you to add a link to the model;
Edit opens the selected node's feature editor where you can edit its configuration;
Change node model by selecting the node, then choosing this option from the contextual menu. Use the sub-menu to choose the required node model;
Attach link provides a list of links that do not have a catchment inflow;
Change Link routing of a link by selecting in in the Geographic Editor, then choosing this option from the contextual menu. Choose the link routing type from the resulting sub-menu;
Apply Link to All applies the properties of the selected link to all other links in the catchments scenario;
Delete removes the selected node/link from the scenario;
Copy graph copies the current map (or graph) to the Windows clipboard;
Properties opens the properties window, which allows you to change the appearance of the map; and
Save... displays a list of the data represented on the map, and allows you to save that data in different formats. For example, you can save a node-link network in different node-link file formats, and a sub-catchment map as an ESRI shape file.

You can edit most Source networks within the Schematic Editor, but it is also possible to add and remove nodes and links from the Geographic Editor. Ensure that one of the following is enabled (from the contextual menu):

You can add nodes to the model when Add Nodes is enabled. To add a new node, click on the Geographic Editor at the specified location (top right schematic in Figure 2). By default, all nodes are created as confluence nodes. Note that Add Nodes stays enabled until it is explicitly disabled by enabling a different mode. Subsequent clicks in the Geographic Editor will place additional new nodes;
To change the type of node, ensure that Select is enabled. Click on the node of interest, which will highlight it. Right click and choose Change Node Model. This will open another menu, which lists the node types you can change to (bottom left schematic in Figure 11);
Links can be added by enabling Add Link and clicking twice to add links between pairs of nodes. The first click selects the upstream node (highlighted with an enlarged icon). The second click identifies the downstream node and creates the link. Refer to the bottom right schematic in Figure 11. Since Add Link remains enabled, subsequent pairs of clicks continue to add additional links until it is disabled. By default, a new link is configured with straight through routing. The routing type can be changed by right clicking on the link and choosing Change Link Routing.
Nodes and links can be deleted after Select has been enabled. Note that you can can also use Select to edit nodes and links through their respective feature editors. Click on the node you wish you delete (this will highlight it) and press the delete key.
Create a new link to act as the receiving link for the catchment;
Choose Select from the contextual menu and click the catchment you wish to reconnect;
Right click and choose Attach Link (this will contain a sub-menu listing links that don’t have a catchment inflow); and
Select the desired link to attach the catchment to the link.

When deleting nodes and links, there is no warning given, and no confirmation is sought. When a node is deleted, all links immediately upstream or downstream of the node are deleted as well. This action cannot be undone.

Figure 2. Geographic editor (Network editing)

Note: Catchment runoff is fed into links, so deleting a link that is associated with a catchment effectively stops that catchment runoff from entering the system. When this happens, the catchment boundary is highlighted to indicate that the catchment is disconnected from the network. Follow the steps listed to reconnect the catchment to the network.

You can also set geolocation coordinates and elevations for nodes and reaches using the Location Control window (using View » Location Control, as shown in figure 3). While it is not essential, it is convenient to set elevations with respect to Australian Height Datum (AHD). You can enter negative numbers for components that are below sea level, such as the lower lakes of the Murray. The elevation of a component is the zero point for that component. For example, the zero point for a storage is the lowest point in the storage.

Figure 1. Geographic Editor contextual menu

Figure 2. Geographic editor (Network editing)

Figure 3. Location control

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