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Melbourne Water MUSIC Guideline

12/02/2025

Melbourne Water produces a MUSIC Modelling Guideline to provide guidance on modelling approaches and input parameters for MUSIC models submitted to Melbourne Water. The MUSIC Modelling Guideline 2024, supporting rainfall templates and maps are available on Melbourne Water’s website, on the Guidelines page.

The objectives of the guideline are to:

  • ensure a consistent, fair, and evidence-based approach is applied to MUSIC models
  • be specific to the climate and geology of the Melbourne region
  • reduce the time taken to prepare and assess MUSIC models.

The guideline is intended for use by members of the land development industry who submit MUSIC models to Melbourne Water for the design of stormwater treatment systems, for example in Developer Services Schemes. The guideline does not cover design guidance or engineering standards and should be read alongside appropriate design guidelines such as:

Latest guidance and updates

In July 2024, Melbourne Water updated the guideline and templates. For further information about the 2024 update, refer to the MUSIC Modelling Guideline 2024 - FAQs.

Clearwater aims to maintain up-to-date resources and information, but users should always refer to the Melbourne Water Guidelines page for the latest guidance.

Historic guidelines (for reference only)

Please be aware that Melbourne Water no longer accepts new models developed using historic templates or guidance.

For those who need to understand older models, Clearwater provides an archive of past guidelines. These documents explain the standards used at the time and can help interpret past modelling decisions. While they have been superseded, they remain available as a reference for modellers and designers. You can find these under ‘supporting documents’ on this webpage.