Sunshine Coast Council Flooding and Stormwater Management Guidelines
    • Last updated:
    • 11 Aug 2019

    National and State Governments have updated flooding and stormwater management guidance.

    This includes significant changes to the:

    • State Planning Policy (2017)
    • 2016 revision of Australian Rainfall and Runoff (ARR)
    • Queensland Urban Drainage Manual Fourth Edition (2017) and
    • Finalisation of ARR Book 9 - Runoff in Urban Areas (May 2019).

    In response, we have prepared a package of Flooding and Stormwater Management information. This includes a set of guidelines and supporting technical documents. It gives you guidance on:

    • the management of stormwater quality, quantity and drainage
    • the code and policy requirements of a future Sunshine Coast Planning Scheme.

    Our information supports the codes and policies of the planning scheme. It will help you with the development application process.

    The codes and policies of the planning scheme are not provided for consultation. This will happen at a future date as part of the consultation for a planning scheme amendment.

    We need your feedback

    We're asking industry to provide feedback on these documents and tools:

    Review of Simple Peak Flow Estimation Methods

    The Review of Simple Peak Flow Estimation Methods[3039KB] provides a:

    • Regional Flood Frequency Estimation method and
    • Modified Rational Method for use on the Sunshine Coast.

    It has been the subject of an independent peer review. To review the application of the methods described in this report, use the spreadsheet tool[175KB].

    Application of Design Temporal Patterns

    This document[2498KB] considers the new ARR ensemble patterns. It gives a pragmatic interpretation of how you may use these, particularly with hydraulic models.

    It has been the subject of an independent peer review. The spreadsheet tool[2750KB] will assist with the creation of MIDIS temporal patterns from Bureau Design Rainfall information and ensemble temporal patterns.

    Application of MIDIS for Rainfall on Grid Modelling

    This document[2413KB] addresses concerns of ARR Book 9 for Rainfall on Grid Modelling methods.

    Rainfall on Grid Output Filtering

    This fact sheet[173KB] details the filtering methodology we'll adopt (as the default) for preparing overland flow mapping.

    Fact sheet on OSD sizing

    This fact sheet[137KB] details the need for onsite water detention (OSD). It also provides a deemed to comply solution. The fact sheet on OSD sizing demonstrates how to apply the deemed to comply solution.

    How to provide feedback

    To submit your feedback please email hydrology@sunshinecoast.qld.gov.au

    In your response, please provide the following information:

    • document or spreadsheet you are commenting on
    • page and/or section

    Consultation period

    The Industry consultation period will close on 20 September 2019.

    Contact us

    For more information about this project please email hydrology@sunshinecoast.qld.gov.au