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Version 5 includes the release of Urban Developer and MUSICX functionality as plugins to Source. This is a significant step forward for the platformUrban water analysis. By using these three tools together, water managers have the ability to assess and plan for truly  integrated water management solutions, that consider water quality and quantity, at the catchment and local scalea range of scales.   

MUSIC and Urban Developer were originally designed to complement each other, to draw together information on urban water quantity (Urban Developer) and water quality (MUSIC) to develop integrated water management solutions in urban areas. These models can now be linked to integrated with eWater Source catchment and river system models. Allowing you to explore possible This allows users to analyse interactions between different components of the water cycle and jointly evaluate demand and water supply options together, .  This provides water managers the tools to understand the best balance of traditional centralised bulk water supply, demand management and alternative water supplies, such as including the use and recycling of stormwater, wastewater and groundwater.

Question - should we acknowledge the investment by Melbourne Water and us?
GD:I think it would be good to acknowledge them.  Yep.  But need to run it past them first.  Also need to acknowledge the broader urban beta testers etc?

Source 5.0 also contains a broad range of other upgrades and enhancements to the platform, including changes to support river operations management, a new ordering system analysis tool, a range of performance improvements, and greater control over the application of constraintsinteraction between planned constraints on supply, planned orders, and water deliveries.

Urban Developer

eWater’s Urban Developer Tool gives water managers the ability to undertake a detailed analysis of household demand and water supply options, taking into account the range of dwelling types, how water is used and water end uses, the water efficiency of different appliances and fittings, and lot size water harvesting/re-use options. As a plugin to Source, Urban Developer allows for a sophisticated small scale assessment of urban water demands to be undertaken as part of the Source modelling frameworkwithin a larger scale Source planning model.

With Urban Developer you can assess the full range of indoor and outdoor water uses for four types of dwellings, dwelling -  detached house, detached house with a rainwater tank, semi-attached house and apartments. It generates a database of average water demand for every combination of household type, occupancy and end-use, for the given climate. Urban Developer takes into account the full range of water efficiency End-uses include showers, hand taps, toilets, washing machines, dishwashers, pools and outdoor use.


Urban Developer helps water managers understand things likefactors such as:

  • the potential demand savings from different water-efficiency measures
  • the impact on demand when dwelling types change, for example, detached housing is replaced by apartments
  • the volume of non-potable household demand that could be replaced by alternative water supplies
  • the effect of small scale potable water substitution on water storages and distribution the bulk water supply/treatment system including water storage and bulk water supply distribution/sewage networks


MUSIC - Model for Urban Stormwater Improvement Conceptualisation) is Australia’s leading tool for water sensitive urban design. MUSIC is used by urban developers, planners, engineers, local government and development approval agencies to manage the impact of urban development and other land-use changes on waterwaysreceiving waters.

eWater has recently released MUSICX, the most significant upgrade to the tool in a decade. MUSICX will soon be available as a plugin to Source. 


We have been working with the MDBA to improve operationalise Source in operations mode. A focus has been enhancements to the Operations Tabular Editor. The editor is now more stable, easier to use, allows you to seamlessly add and remove nodes and is independent of the recorder selection.


We have developed a new recorder to better analyse progression of orders , it shows through complex planning models, in particular those with multiple flow paths and travel times. It shows all the nodes and links in a network and what their orders and requirements are on a particular date and is .  This was designed as a debugging/analysis tool for the ordering system.  Available under: Miscellaneous \ Ordering \ Order Crawler. The Order Crawler is a fully interactive zoomable schematic that shows:


Note that for large networks, it does record a lot of data and is primarily for problem-solving and is not intended to always be turned on. We will do more improvements to this tool for the next production release.

A new Water User and Constraint Phase

Improvements have been made to input The function system has been augmented to provide more information around when constraints happen, to make information available earlier and finer control over function execution during the ordering process.     Just put a link for the below to a confluence page ...

Phase logic has changed from:


  • Data Sources can now find data based on the column name rather than the index. Being able to match by name is important when using Reload on RunMatch data items by Name is now the default option.
    It will validate and fail to run if you are matching based on name and reload a file with duplicate names.
  • Custom charts now include a search bar and more menu items under right-click. Customs charts are also no longer saved by default. All automatically generated charts are created under Temporary and only saved when moved into Saved. Users can also create folders and subfolders for organising custom charts.
  • Constituent Trend and % removal model. Links and Storages decay models have been extended to include a decay to a background concentration rather than to 0 and a % removal that can occur after the decay.
  • We have made improvements to calendar Date Ranges behave closer to expectation. This will change results for a number of users, so we have implemented a Scenario Option to turn on the new Date Ranges algorithm. Existing projects won't be using by default use the new method, and will have to be manually swap swapped over. This gives users a chance to test the new implementation before it becomes the only option.
  • We have introduced the concept of Locking to the Function Modelled Variables, selected . Selected variables can now be locked, making it less likely for mistakes to occurmodelled variables to be inadvertently reassigned to different recorders

  • Ordering for the Irrigator demand model now includes an option to make the Flow phase and Order phase identical.You   This was introduced for Pipe Junctions, and means today's weather (rain, evaporation) will no longer cause irrigator demands to change between order phase and flow phase within a timestep.

  • The GUI for the Resource Allocation Table in Resource Assessment has been made easier to use - you can now freeze columns and drag columns to reorder the columns in the Allocation table  Allocation Table within Resource Assessment.

  • Annual Accounting recorder changes. Some annual accounting recorders at RAS system level were giving incorrect values. The recorded values of "Total account spill reduction", "Total usage water year" and "Total Account Adjustments" at RAS system level values will change.
  • Ownership adjustment for storages and weirs - End of day volumes in Storages and Weirs can now be adjusted.
  • We have made changes to the version numbering system to help users understand when they need a new version of Source to open projects. Details are available at: 4.13 - Beta Release (June 2020)