Access & licensing

Software licences

eWater continues to maintain a free Public version of Source to facilitate research and teaching of Catchment and Water System Modelling to support IWRM.

The full version of Source has been broken down into a number of modules. This will allow the custom section of the purchased software, while providing the best value for our customer's needs.

eWater also provides Premium Support services, with access to our Source developers and Source scientists and hydrologists. For more information please contact us at [email protected].

Accessing the software

You can download the Source software and resources – including documentation and community plugins – from the eWater Toolkit ( The Toolkit is your 'one-stop shop' for water and catchment management utility tools backed by a community of practice.

You need an active Toolkit account (free), which also gives you access to many other freeware tools – such as Eco Modeller, eFlow Predictor, Rainfall-Runoff Library and TIME – the Best Practice Modelling Guidelines and the eWater forum.

Access and Licensing Policy

End User Licence Agreement

Getting started with Source (public version)

The following are instructions on how to download Source (public version), the free version of Source.

  1. Log into the eWater Toolkit, or sign up as a new member (after signing up, you will need to verify your email address by clicking on the link in the confirmation email).
  2. Once you have logged in, go to the Source (public version) product page (Tools > Source (public version)).
  3. Click on Download software (left-hand menu), then read and agree to the Product Licence Agreement.
  4. On the next page select the correct software installer for your computer system.
  5. Once downloaded, run the installer file and follow the prompts to install Source.

System requirements

Outlined below are the minimum and recommended system requirements for installing and using Source. Note that software installation may require the assistance of a system administrator.

Minimum requirements (performance issues)
  • Windows 7 (64-bit)
  • Two hard drives (one for the Operating System) and a10,000 RPM hard drive with write caching or a solid state disk
  • 16GB RAM

Up to 5GB of available space may be required, and maintaining a free hard disk space of at least 16GB is recommended.

If using Insight, you will also need the Microsoft Visual C++ 2010 Redistributable Package, 32-bit version (for both 32 and 64-bit machines): available here.

Note: Standard laptop drives are not recommended for optimum performance.

Installation & Documentation

For instructions on how to install, launch and use Source, please visit our Source Documentation wiki at

Get Source       Download free trial