You can extend the capabilities of Source by adding new component models or data processing tools. Some of these "plugin" tools extend Source’s user interface. Other plugins, especially those written by third parties, may look and operate differently from the normal user interface. Refer to Assign catchment models when working with catchment model plugins.

Plugins are files which have a .DLL or .EXE extension, and work with specific versions of Source. Plugins that are external to Source, and must be downloaded from the Internet, must be handled differently. Refer to Externally created plugins for more information.. 

Note: Many of the existing eWater CRC Toolkit tools (or components of these tools) can be used as Source plugins; however, you must ensure that the plugin version is compatible with the Source version. In other words, the plugin .dll files have been compiled against the Source version that the plugin is to be used with. Also note that plugins are compatible with different version of Source, provided that the first three digits of the Source version number are the same. For example, a plugin that is compatible with different versions of Source 3.7.0 will not be compatible with 3.5.0.

There are several plugins included with Source that have been verified by the Source development team. This documentation is only developed and maintained for these included plugins. Table 1 provides plugin file and location details of plugins that are discussed in more detail.

Table 1. Plugins
PluginPlugin fileLocation in Source
GWLag Plugin
C:\Program Files\eWater\<Source version>\Plugins\RiverSystem.Plugins.PerfectGWLag.dll
Tools » Plugins » <various related folders>
River Analysis Package
C:\Program Files\eWater\<Source version>\Plugins\RiverSystem.Plugins.RAP.dll
Tools » Plugins » Ecology.RAP » <name of RAP tool>
Spatial data pre-processor
C:\Program Files\eWater\<Source version>\Plugins\RiverSystem.Plugins.SpatialDataPreProcessor.dll
Tools » Plugins » RiverSystem.Plugins.SpatialDataPreProcessor

Note: Follow these guidelines when working with plugins in Source:

  • No projects must be open when loading plugins; and
  • Restart Source when unloading plugins (ensure that they are enabled in the Plugin Manager first).

Working with the Plugin Manager

The Plugin Manager allows you to install, load and manage all plugins in Source. Available via Tools » Plugin Manager, this dialog (shown in Figure 1) shows all plugins that have been installed either:

The Details panel in the Plugin Manager provides the following information for the selected plugin:

Installing plugins

Manually installing plugins

Source community plugins are installed as part of Source are located in the following folder:

C:\Program Files\eWater\<Source version>\Plugins


<Source version> refers to the version of Source currently in use. 

To install a plugin manually:

Figure 1. Plugin manager

Note: If a required plugin is not loaded, Source might have a problem running. In this instance, you will be notified with a warning dialog (example in Figure 2).

Figure 2. Error without installed plugin

Installing via the online store

Uninstalling plugins from a source project

To uninstall plugins from a source project when they have been added accidentally, normally just load this project file to a source version which does not install the plugins ( not included in plugin manager ) and then save the project. By doing this, source will try to remove the plugins. But for certain plugins, the following steps are needed to be able to uninstall it from a source project:

This is currently only required for plugins:

Figure 3. Remove Plugin Tool

Upgrading plugins

There are two possible scenarios that warrant an upgrade:

Writing your own plugins

To write your own plugins using .NET and C#, contact  With a Source licence, you can get access to How to write plugins for Source.

Externally created plugins

For plugins that have been developed externally to Source (such as DERMTools), you must manually unblock them in Windows after downloading. By default, Windows blocks the execution of programs downloaded from the internet (including the .dlls used as Source plugins) in order to reduce the risk of the computer being infected by a virus or some other form of malicious software.

The use of the unblock option carries with it risk, in that it removes a key defence against malicious software. You should only use unblock a DLL or EXE when you are confident that the software in question does not contain malicious code.

Once downloaded, open as follows:

The plugin can then be loaded as normal in Source.

Figure 4. Unblocking external plugins