The Bentley SewerGEMS ArcMap client utilizes a hydraulic Model Manager to allow you to disconnect and reconnect a model from the underlying geodatabase, to view and edit multiple hydraulic models, and to display multiple hydraulic models on the same map.

The Hydraulic Model Manager lists all of the hydraulic models that have been opened during the ArcMap session. The following controls are available:

• Add—Clicking the Add button opens a submenu containing the following commands:
• Add New Hydraulic Model—Opens a Save As dialog, allowing you to specify a hydraulic model name and directory location. After clicking the Save button, the Attach Geodatabase dialog opens, allowing you to specify a new or existing geodatabase to be connected to the hydraulic model.
• Add Existing Hydraulic Model—Opens an Open dialog, allowing you to browse to the Bentley SewerGEMS hydraulic model to be added. If the Bentley SewerGEMS hydraulic model is not associated with a geodatabase, the Attach Geodatabase dialog opens, allowing you to specify a new or existing geodatabase to be connected to the hydraulic model.
• Open Hydraulic Model—Opens the hydraulic model that is currently highlighted in the Hydraulic Model Manager list pane. You can only edit hydraulic models that are currently open. This command is available only when the currently highlighted hydraulic model is closed.
• Save Hydraulic Model—Saves the hydraulic model that is currently highlighted in the Hydraulic Model Manager list pane. This command is available only when changes have been made to the currently highlighted hydraulic model.
• Close Hydraulic Model—Closes the hydraulic model that is currently highlighted in the Hydraulic Model Manager list pane. Closed hydraulic models cannot be edited, but the elements within the hydraulic model will still be displayed in the map. This command is available only when the currently highlighted hydraulic model is open.
• Remove Hydraulic Model—Removes the hydraulic model that is currently highlighted in the Hydraulic Model Manager list pane. This command permanently breaks the connection to the geodatabase associated with the hydraulic model.
• Make Current—Makes the hydraulic model that is currently highlighted in the Hydraulic Model Manager list pane the current hydraulic model. Edits made in the map are applied to the current hydraulic model. This command is available only when the currently highlighted hydraulic model is not marked current.
• Help—Opens the online help.

To add a new hydraulic model:

1. From the Hydraulic Model Manager, click the Add button and select the Add New Hydraulic Model command. Or, from the Bentley SewerGEMS menu, click the Hydraulic Model menu and select the Add New Hydraulic Model command.
2. In the Save As dialog that appears, specify a name and directory location for the new hydraulic model, then click the Save button.
3. In the Attach Geodatabase dialog that appears, click the Attach Geodatabase button. Browse to an existing geodatabase to import the new hydraulic model into, or create a new geodatabase by entering a name for the geodatabase and specifying a directory. Click the Save button.
4. Enter a dataset name.
5. You can assign a spatial reference to the hydraulic model by clicking the Change button, then specifying spatial reference data in the Spatial Reference Properties dialog that appears.
6. In the Attach Geodatabase dialog, click the OK button to create the new hydraulic model.

To add an existing hydraulic model:

1. From the Hydraulic Model Manager, click the Add button and select the Add Existing Hydraulic Model command. Or, from the Bentley SewerGEMS menu, click the Hydraulic Model menu and select the Add Existing Hydraulic Model command.
2. In the Open dialog that appears, browse to the location of the hydraulic model, highlight it, then click the Open button.
3. If the hydraulic model is not associated with a geodatabase, the Attach Geodatabase dialog opens, allowing you to specify a new or existing geodatabase to be connected to the hydraulic model. Continue to Step 4. If the hydraulic model has already been associated with a geodatabase, the Attach Geodatabase will not open, and the hydraulic model will be added.
4. In the Attach Geodatabase dialog, click the Attach Geodatabase button. Browse to an existing geodatabase to import the new hydraulic model into, or create a new geodatabase by entering a name for the geodatabase and specifying a directory. Click the Save button.